925 Area CodeConcord, CA
Area code 925 covers Concord and nearby communities in California, in the Pacific Time (PT) zone, home to about 1,134,632 people across 41 cities. It's the only area code for this region, so the three digits alone place the caller.
Overview
- Major City
- Concord
- State
- California (CA)
- Timezone
- Pacific Time (PT)
- Current Time
- –:––
- Overlay
- No – unique area code
Where is area code 925?
Area code 925 serves part of Concord, CA and the surrounding areas. It is a unique area code with no overlays.
Overview of the 925 Area Code
What is the 925 area code?
The 925 area code serves Concord, California. When you see a 925 number, it indicates a local number within this geographic area.
Why was area code 925 created?
Area code 925 went into service on March 14, 1998, taking over territory that had been part of area code 510.
Geographic Coverage of the 925 Area Code
The 925 area code serves Concord and surrounding areas in California. It operates within the Pacific Time (PT) time zone. This area code covers several key cities, including:
- Concord
- Antioch
- Mountain View
- San Ramon
- Livermore
- Pittsburg
Got a call from a 925 number? It came from Concord, CA. No other area code overlaps the 925 territory, so the prefix alone identifies where the caller is. Of the listed cities' population, Concord accounts for about 10.4%; the rest is split across 40 smaller cities.
Concord Area Code Overview
The 925 area code provides comprehensive telephone coverage for Concord and its surrounding communities. As the sole area code for this region, it uniquely identifies all local numbers within the service area.
What cities does area code 925 cover?
| City | State | Population | Population in 925 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Concord | CA | 124,016 | 124,016 | 10.4% | 100.0% |
| Antioch | CA | 118,453 | 118,453 | 9.9% | 100.0% |
| Mountain View | CA | 87,316 | 87,316 | 7.3% | 100.0% |
| San Ramon | CA | 85,924 | 85,924 | 7.2% | 100.0% |
| Livermore | CA | 84,867 | 84,867 | 7.1% | 100.0% |
| Pittsburg | CA | 77,131 | 77,131 | 6.5% | 100.0% |
| Pleasanton | CA | 75,664 | 75,664 | 6.3% | 100.0% |
| Walnut Creek | CA | 70,817 | 70,817 | 5.9% | 100.0% |
| Dublin | CA | 70,544 | 65,002 | 5.9% | 92.1% |
| Brentwood | CA | 66,286 | 66,286 | 5.6% | 100.0% |
| Oakley | CA | 47,158 | 47,158 | 3.9% | 100.0% |
| Danville | CA | 43,410 | 43,410 | 3.6% | 100.0% |
| Martinez | CA | 37,006 | 37,006 | 3.1% | 100.0% |
| Pleasant Hill | CA | 34,169 | 34,169 | 2.9% | 100.0% |
| Lafayette | CA | 25,371 | 25,371 | 2.1% | 100.0% |
| Bay Point | CA | 21,349 | 21,349 | 1.8% | 100.0% |
| Orinda | CA | 19,573 | 19,573 | 1.6% | 100.0% |
| Moraga | CA | 16,698 | 16,698 | 1.4% | 100.0% |
| Alamo | CA | 14,570 | 14,570 | 1.2% | 100.0% |
| Discovery Bay | CA | 13,352 | 13,352 | 1.1% | 100.0% |
| Clayton | CA | 10,933 | 10,933 | 0.9% | 100.0% |
| Blackhawk | CA | 9,354 | 9,354 | 0.8% | 100.0% |
| Contra Costa Centre | CA | 5,364 | 5,364 | 0.4% | 100.0% |
| Saranap | CA | 5,202 | 5,202 | 0.4% | 100.0% |
| Vine Hill | CA | 3,761 | 3,761 | 0.3% | 100.0% |
| Pacheco | CA | 3,685 | 3,685 | 0.3% | 100.0% |
| San Miguel | CA | 3,392 | 3,392 | 0.3% | 100.0% |
| Reliez Valley | CA | 3,101 | 3,101 | 0.3% | 100.0% |
| Camino Tassajara | CA | 2,197 | 2,197 | 0.2% | 100.0% |
| Bethel Island | CA | 2,137 | 2,137 | 0.2% | 100.0% |
| Knightsen | CA | 1,568 | 1,568 | 0.1% | 100.0% |
| Castle Hill | CA | 1,299 | 1,299 | 0.1% | 100.0% |
| Byron | CA | 1,277 | 1,277 | 0.1% | 100.0% |
| Diablo | CA | 1,158 | 1,158 | 0.1% | 100.0% |
| Acalanes Ridge | CA | 1,137 | 1,137 | 0.1% | 100.0% |
| Shell Ridge | CA | 959 | 959 | 0.1% | 100.0% |
| Norris Canyon | CA | 957 | 957 | 0.1% | 100.0% |
| Alhambra Valley | CA | 924 | 924 | 0.1% | 100.0% |
| Sunol | CA | 913 | 913 | 0.1% | 100.0% |
| North Gate | CA | 679 | 679 | 0.1% | 100.0% |
| Clyde | CA | 678 | 678 | 0.1% | 100.0% |
City population is shown in full. The share of each city inside 925 is measured from Census tract centroids, not estimated from a rate-center match – so a city split between two codes appears on both, at the fraction each one actually holds. The “% of listed-city population” column uses the full populations of the cities listed here.
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 925 been reported for unwanted calls?
Yes – 1,604 unwanted-call complaints were reported to the FTC for numbers showing a 925 area code (May 29 – Aug 14, 2026).
- 65% robocalls
- ↑ 13% vs prior period
Most-reported subjects
- Other50%800
- Dropped call or no message13%212
- Reducing your debt (credit cards, mortgage, student loans)10%165
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-08-17.
Which prefixes and exchanges belong to area code 925?
62% assigned to a telco
- 77% Landline
- 23% Wireless
- 0% Unknown
of 617 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (925)200- | Wireless | Verizon Wireless |
| (925)201- | Landline | Tpx Communications |
| (925)202- | Wireless | Sprint Spectrum |
| (925)203- | Wireless | New Cingular Wireless Pcs |
| (925)204- | Wireless | T-Mobile Usa |
| (925)205- | Landline | American Messaging Services |
| (925)206- | Wireless | Verizon Wireless |
| (925)207- | Wireless | Sprint Spectrum |
| (925)208- | Landline | Teleport Communications America |
| (925)209- | Wireless | Sprint Spectrum |
| (925)210- | Landline | Pacific Bell |
| (925)212- | Wireless | New Cingular Wireless Pcs |
| (925)213- | Wireless | Usa Mobility Wireless |
| (925)214- | Landline | Peerless Network Of California |
| (925)215- | Landline | Level 3 Communications |
| (925)216- | Wireless | New Cingular Wireless Pcs |
| (925)217- | Landline | Level 3 Communications |
| (925)218- | Landline | Level 3 Communications |
| (925)219- | Landline | Level 3 Communications |
| (925)220- | Landline | American Messaging Services |
| (925)221- | Wireless | 33 Wireless |
| (925)222- | Landline | Onvoy |
| (925)223- | Landline | Mcimetro Access Transmission Services |
| (925)224- | Landline | Pacific Bell |
| (925)225- | Landline | Pacific Bell |
| (925)226- | Landline | Xo California |
| (925)227- | Landline | Pacific Bell |
| (925)228- | Landline | Pacific Bell |
| (925)229- | Landline | Pacific Bell |
| (925)230- | Landline | Level 3 Communications |
| (925)231- | Landline | Level 3 Communications |
| (925)232- | Landline | Level 3 Communications |
| (925)233- | Landline | Level 3 Communications |
| (925)234- | Landline | Level 3 Communications |
| (925)235- | Landline | Level 3 Communications |
| (925)236- | Landline | Level 3 Communications |
| (925)237- | Landline | Xo California |
| (925)238- | Landline | Comcast Ip Phone |
| (925)239- | Landline | Peerless Network Of California |
| (925)240- | Landline | Pacific Bell |
| (925)241- | Landline | Mcimetro Access Transmission Services |
| (925)242- | Landline | Pacific Bell |
| (925)243- | Landline | Pacific Bell |
| (925)244- | Landline | Pacific Bell |
| (925)245- | Landline | Pacific Bell |
| (925)246- | Landline | Pacific Bell |
| (925)247- | Landline | Pacific Bell |
| (925)248- | Landline | Pacific Bell |
| (925)249- | Landline | Pacific Bell |
| (925)250- | Wireless | Sprint Spectrum |
| (925)251- | Landline | Pacific Bell |
| (925)252- | Landline | Pacific Bell |
| (925)253- | Landline | Pacific Bell |
| (925)254- | Landline | Pacific Bell |
| (925)255- | Landline | Mcimetro Access Transmission Services |
| (925)256- | Landline | Pacific Bell |
| (925)257- | Landline | Mcimetro Access Transmission Services |
| (925)258- | Landline | Pacific Bell |
| (925)259- | Landline | Xo California |
| (925)260- | Wireless | Sprint Spectrum |
| (925)261- | Landline | Pacific Bell |
| (925)262- | Landline | Global Crossing Local Services |
| (925)263- | Landline | Global Crossing Local Services |
| (925)264- | Landline | Global Crossing Local Services |
| (925)265- | Landline | Global Crossing Local Services |
| (925)266- | Wireless | Verizon Wireless |
| (925)267- | Landline | Xo California |
| (925)268- | Landline | Xo California |
| (925)269- | Landline | Xo California |
| (925)270- | Landline | Level 3 Communications |
| (925)271- | Landline | Teleport Communications America |
| (925)272- | Landline | Level 3 Communications |
| (925)273- | Landline | Xo California |
| (925)274- | Landline | Pacific Bell |
| (925)275- | Landline | Pacific Bell |
| (925)276- | Landline | Xo California |
| (925)277- | Landline | Pacific Bell |
| (925)278- | Landline | Comcast Ip Phone |
| (925)279- | Landline | Pacific Bell |
| (925)280- | Landline | Pacific Bell |
| (925)281- | Landline | Onvoy |
| (925)282- | Landline | Mcimetro Access Transmission Services |
| (925)283- | Landline | Pacific Bell |
| (925)284- | Landline | Pacific Bell |
| (925)285- | Wireless | New Cingular Wireless Pcs |
| (925)286- | Wireless | New Cingular Wireless Pcs |
| (925)287- | Landline | Pacific Bell |
| (925)288- | Landline | Pacific Bell |
| (925)289- | Landline | Ymax Communications |
| (925)290- | Landline | Xo California |
| (925)291- | Landline | Xo California |
| (925)292- | Landline | Comcast Ip Phone |
| (925)293- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)294- | Landline | Pacific Bell |
| (925)295- | Landline | Pacific Bell |
| (925)296- | Landline | Pacific Bell |
| (925)297- | Landline | Xo California |
| (925)298- | Landline | Mcimetro Access Transmission Services |
| (925)299- | Landline | Pacific Bell |
| (925)300- | Wireless | T-Mobile Usa |
| (925)301- | Landline | Level 3 Communications |
| (925)302- | Landline | Level 3 Telecom Of California |
| (925)303- | Landline | Level 3 Telecom Of California |
| (925)304- | Landline | Level 3 Communications |
| (925)305- | Landline | Level 3 Telecom Of California |
| (925)306- | Landline | Sonic Telecom |
| (925)307- | Landline | Level 3 Telecom Of California |
| (925)308- | Landline | Level 3 Telecom Of California |
| (925)309- | Landline | Level 3 Telecom Of California |
| (925)310- | Landline | Level 3 Telecom Of California |
| (925)312- | Wireless | Usa Mobility Wireless |
| (925)313- | Landline | Pacific Bell |
| (925)314- | Landline | Pacific Bell |
| (925)315- | Landline | Level 3 Telecom Of California |
| (925)316- | Landline | Level 3 Communications |
| (925)317- | Landline | Bandwidth.Com Clec |
| (925)318- | Landline | Level 3 Telecom Of California |
| (925)319- | Wireless | T-Mobile Usa |
| (925)320- | Landline | Tpx Communications |
| (925)321- | Wireless | New Cingular Wireless Pcs |
| (925)322- | Landline | Bandwidth.Com Clec |
| (925)323- | Wireless | New Cingular Wireless Pcs |
| (925)324- | Wireless | Verizon Wireless |
| (925)325- | Wireless | T-Mobile Usa |
| (925)326- | Landline | Level 3 Communications |
| (925)327- | Landline | Pacific Bell |
| (925)328- | Landline | Pacific Bell |
| (925)329- | Wireless | Verizon Wireless |
| (925)330- | Wireless | New Cingular Wireless Pcs |
| (925)331- | Landline | Tpx Communications |
| (925)332- | Landline | Peerless Network Of California |
| (925)333- | Landline | American Messaging Services |
| (925)334- | Wireless | Verizon Wireless |
| (925)335- | Landline | Pacific Bell |
| (925)336- | Wireless | New Cingular Wireless Pcs |
| (925)337- | Wireless | Verizon Wireless |
| (925)338- | Landline | Bandwidth.Com Clec |
| (925)339- | Landline | Metropcs |
| (925)340- | Wireless | Usa Mobility Wireless |
| (925)341- | Wireless | New Cingular Wireless Pcs |
| (925)342- | Landline | American Messaging Services |
| (925)343- | Landline | American Messaging Services |
| (925)344- | Landline | Tpx Communications |
| (925)345- | Landline | American Messaging Services |
| (925)346- | Landline | American Messaging Services |
| (925)347- | Landline | American Messaging Services |
| (925)348- | Wireless | New Cingular Wireless Pcs |
| (925)349- | Landline | Teleport Communications America |
| (925)350- | Landline | Comcast Ip Phone |
| (925)351- | Wireless | Sprint Spectrum |
| (925)352- | Wireless | Sprint Spectrum |
| (925)353- | Wireless | New Cingular Wireless Pcs |
| (925)354- | Wireless | New Cingular Wireless Pcs |
| (925)355- | Landline | Pacific Bell |
| (925)356- | Landline | Pacific Bell |
| (925)357- | Landline | Level 3 Communications |
| (925)358- | Landline | Pacific Bell |
| (925)359- | Landline | Mcimetro Access Transmission Services |
| (925)360- | Wireless | New Cingular Wireless Pcs |
| (925)361- | Landline | Teleport Communications America |
| (925)362- | Landline | Pacific Bell |
| (925)363- | Landline | Pacific Bell |
| (925)364- | Landline | Mcimetro Access Transmission Services |
| (925)365- | Landline | Teleport Communications America |
| (925)366- | Wireless | Sprint Spectrum |
| (925)367- | Wireless | Sprint Spectrum |
| (925)368- | Wireless | Sprint Spectrum |
| (925)369- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)370- | Landline | Pacific Bell |
| (925)371- | Landline | Pacific Bell |
| (925)372- | Landline | Pacific Bell |
| (925)373- | Landline | Pacific Bell |
| (925)374- | Landline | Mcimetro Access Transmission Services |
| (925)375- | Wireless | Verizon Wireless |
| (925)376- | Landline | Pacific Bell |
| (925)377- | Landline | Pacific Bell |
| (925)378- | Wireless | Verizon Wireless |
| (925)379- | Landline | Level 3 Telecom Of California |
| (925)380- | Landline | Level 3 Communications |
| (925)381- | Wireless | New Cingular Wireless Pcs |
| (925)382- | Wireless | Sprint Spectrum |
| (925)383- | Wireless | Sprint Spectrum |
| (925)384- | Landline | At&T |
| (925)385- | Landline | Teleport Communications America |
| (925)386- | Landline | Teleport Communications America |
| (925)387- | Landline | Teleport Communications America |
| (925)388- | Landline | Teleport Communications America |
| (925)389- | Wireless | New Cingular Wireless Pcs |
| (925)390- | Wireless | New Cingular Wireless Pcs |
| (925)391- | Landline | Level 3 Communications |
| (925)392- | Landline | Teleport Communications America |
| (925)393- | Landline | Onvoy |
| (925)394- | Landline | Global Crossing Local Services |
| (925)395- | Landline | Teleport Communications America |
| (925)396- | Landline | Onvoy |
| (925)397- | Landline | Onvoy |
| (925)398- | Landline | Teleport Communications America |
| (925)399- | Landline | Comcast Ip Phone |
| (925)400- | Landline | Bandwidth.Com Clec |
| (925)401- | Landline | Mcimetro Access Transmission Services |
| (925)402- | Landline | Mcimetro Access Transmission Services |
| (925)403- | Landline | Mcimetro Access Transmission Services |
| (925)404- | Landline | Mcimetro Access Transmission Services |
| (925)405- | Landline | Mcimetro Access Transmission Services |
| (925)406- | Landline | Mcimetro Access Transmission Services |
| (925)407- | Landline | Mcimetro Access Transmission Services |
| (925)408- | Wireless | New Cingular Wireless Pcs |
| (925)409- | Wireless | Verizon Wireless |
| (925)410- | Landline | Tpx Communications |
| (925)412- | Wireless | Verizon Wireless |
| (925)413- | Wireless | New Cingular Wireless Pcs |
| (925)414- | Wireless | Verizon Wireless |
| (925)415- | Landline | Level 3 Communications |
| (925)416- | Landline | Pacific Bell |
| (925)417- | Landline | Pacific Bell |
| (925)418- | Landline | Level 3 Communications |
| (925)419- | Landline | American Messaging Services |
| (925)420- | Landline | Onvoy |
| (925)421- | Landline | Bandwidth.Com Clec |
| (925)422- | Landline | Pacific Bell |
| (925)423- | Landline | Pacific Bell |
| (925)424- | Landline | Pacific Bell |
| (925)425- | Landline | Teleport Communications America |
| (925)426- | Landline | Pacific Bell |
| (925)427- | Landline | Pacific Bell |
| (925)428- | Wireless | T-Mobile Usa |
| (925)429- | Landline | Level 3 Communications |
| (925)430- | Landline | Comcast Ip Phone |
| (925)431- | Landline | Pacific Bell |
| (925)432- | Landline | Pacific Bell |
| (925)433- | Landline | Comcast Ip Phone |
| (925)434- | Landline | Peerless Network Of California |
| (925)435- | Wireless | T-Mobile Usa |
| (925)436- | Wireless | T-Mobile Usa |
| (925)437- | Wireless | New Cingular Wireless Pcs |
| (925)438- | Landline | Tpx Communications |
| (925)439- | Landline | Pacific Bell |
| (925)440- | Wireless | Verizon Wireless |
| (925)441- | Landline | Tpx Communications |
| (925)443- | Landline | Pacific Bell |
| (925)444- | Landline | Tpx Communications |
| (925)445- | Wireless | T-Mobile Usa |
| (925)446- | Wireless | Sprint Spectrum |
| (925)447- | Landline | Pacific Bell |
| (925)448- | Wireless | Verizon Wireless |
| (925)449- | Landline | Pacific Bell |
| (925)450- | Landline | Bandwidth.Com Clec |
| (925)451- | Wireless | New Cingular Wireless Pcs |
| (925)452- | Landline | Tpx Communications |
| (925)453- | Landline | Mcimetro Access Transmission Services |
| (925)454- | Landline | Pacific Bell |
| (925)455- | Landline | Pacific Bell |
| (925)456- | Landline | Pacific Bell |
| (925)457- | Wireless | Sprint Spectrum |
| (925)458- | Landline | Pacific Bell |
| (925)459- | Landline | Level 3 Communications |
| (925)460- | Landline | Pacific Bell |
| (925)461- | Landline | Pacific Bell |
| (925)462- | Landline | Pacific Bell |
| (925)463- | Landline | Pacific Bell |
| (925)464- | Wireless | Verizon Wireless |
| (925)465- | Landline | Level 3 Communications |
| (925)466- | Landline | Fractel |
| (925)467- | Landline | Pacific Bell |
| (925)468- | Landline | Pacific Bell |
| (925)469- | Landline | Pacific Bell |
| (925)470- | Landline | Teleport Communications America |
| (925)471- | Landline | Getgo Communications |
| (925)472- | Landline | Pacific Bell |
| (925)473- | Landline | Pacific Bell |
| (925)474- | Landline | Tpx Communications |
| (925)475- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)476- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)477- | Wireless | T-Mobile Usa |
| (925)478- | Landline | Level 3 Communications |
| (925)479- | Landline | Pacific Bell |
| (925)480- | Landline | Tpx Communications |
| (925)481- | Wireless | New Cingular Wireless Pcs |
| (925)482- | Landline | Tpx Communications |
| (925)483- | Landline | Comcast Ip Phone |
| (925)484- | Landline | Pacific Bell |
| (925)485- | Landline | Pacific Bell |
| (925)487- | Wireless | New Cingular Wireless Pcs |
| (925)488- | Landline | Peerless Network Of California |
| (925)489- | Wireless | T-Mobile Usa |
| (925)490- | Landline | Bandwidth.Com Clec |
| (925)492- | Landline | Commio |
| (925)493- | Landline | Teleport Communications America |
| (925)494- | Landline | Bandwidth.Com Clec |
| (925)495- | Landline | Bandwidth.Com Clec |
| (925)496- | Landline | Bandwidth.Com Clec |
| (925)497- | Landline | Metropcs |
| (925)498- | Landline | Tpx Communications |
| (925)499- | Landline | Mcimetro Access Transmission Services |
| (925)500- | Landline | Onvoy |
| (925)501- | Wireless | T-Mobile Usa |
| (925)502- | Wireless | New Cingular Wireless Pcs |
| (925)503- | Wireless | T-Mobile Usa |
| (925)504- | Wireless | New Cingular Wireless Pcs |
| (925)505- | Wireless | Dish Wireless |
| (925)506- | Wireless | T-Mobile Usa |
| (925)507- | Wireless | Verizon Wireless |
| (925)509- | Wireless | Usa Mobility Wireless |
| (925)510- | Wireless | Sprint Spectrum |
| (925)513- | Landline | Pacific Bell |
| (925)515- | Landline | Onvoy |
| (925)516- | Landline | Pacific Bell |
| (925)517- | Landline | Onvoy |
| (925)518- | Wireless | Sprint Spectrum |
| (925)519- | Wireless | Verizon Wireless |
| (925)520- | Landline | Pacific Bell |
| (925)521- | Landline | Pacific Bell |
| (925)522- | Landline | Pacific Bell |
| (925)523- | Landline | Pacific Bell |
| (925)524- | Landline | Pacific Bell |
| (925)525- | Wireless | Sprint Spectrum |
| (925)526- | Landline | Tpx Communications |
| (925)527- | Landline | Utility Telecom Group |
| (925)528- | Wireless | Sprint Spectrum |
| (925)529- | Landline | Onvoy |
| (925)532- | Landline | Telnyx |
| (925)533- | Landline | Fractel |
| (925)534- | Landline | Level 3 Communications |
| (925)535- | Wireless | Sprint Spectrum |
| (925)536- | Landline | Telnyx |
| (925)537- | Landline | Ton80 Communications |
| (925)542- | Wireless | Verizon Wireless |
| (925)543- | Landline | Pacific Bell |
| (925)546- | Landline | Ton80 Communications |
| (925)548- | Wireless | New Cingular Wireless Pcs |
| (925)549- | Wireless | New Cingular Wireless Pcs |
| (925)550- | Wireless | New Cingular Wireless Pcs |
| (925)551- | Landline | Pacific Bell |
| (925)552- | Landline | Pacific Bell |
| (925)553- | Landline | Xo California |
| (925)556- | Landline | Pacific Bell |
| (925)557- | Landline | Mcimetro Access Transmission Services |
| (925)558- | Landline | Xo California |
| (925)560- | Landline | Pacific Bell |
| (925)565- | Landline | Metropcs |
| (925)566- | Landline | Teleport Communications America |
| (925)567- | Wireless | Sprint Spectrum |
| (925)568- | Landline | Teleport Communications America |
| (925)570- | Wireless | Sprint Spectrum |
| (925)571- | Landline | North County Communication |
| (925)572- | Landline | North County Communication |
| (925)573- | Landline | North County Communication |
| (925)574- | Landline | Tpx Communications |
| (925)575- | Wireless | Sprint Spectrum |
| (925)577- | Wireless | T-Mobile Usa |
| (925)578- | Landline | Ton80 Communications |
| (925)579- | Landline | Mcimetro Access Transmission Services |
| (925)580- | Wireless | Sprint Spectrum |
| (925)583- | Landline | Tpx Communications |
| (925)584- | Wireless | Sprint Spectrum |
| (925)586- | Wireless | Verizon Wireless |
| (925)587- | Landline | Tpx Communications |
| (925)588- | Landline | Tpx Communications |
| (925)590- | Landline | Onvoy Spectrum |
| (925)592- | Landline | Tpx Communications |
| (925)594- | Landline | Metropcs |
| (925)595- | Wireless | Sprint Spectrum |
| (925)596- | Wireless | Verizon Wireless |
| (925)597- | Wireless | Verizon Wireless |
| (925)598- | Landline | Pacific Bell |
| (925)599- | Landline | Fractel |
| (925)600- | Landline | Pacific Bell |
| (925)602- | Landline | Pacific Bell |
| (925)603- | Landline | Pacific Bell |
| (925)605- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)606- | Landline | Pacific Bell |
| (925)608- | Landline | Level 3 Communications |
| (925)609- | Landline | Pacific Bell |
| (925)621- | Landline | Tpx Communications |
| (925)623- | Wireless | Sprint Spectrum |
| (925)625- | Landline | Pacific Bell |
| (925)626- | Landline | Mcimetro Access Transmission Services |
| (925)627- | Landline | Tpx Communications |
| (925)628- | Wireless | Verizon Wireless |
| (925)631- | Landline | Pacific Bell |
| (925)633- | Landline | Fractel |
| (925)634- | Landline | Pacific Bell |
| (925)635- | Landline | Teleport Communications America |
| (925)639- | Wireless | T-Mobile Usa |
| (925)640- | Wireless | New Cingular Wireless Pcs |
| (925)642- | Wireless | New Cingular Wireless Pcs |
| (925)643- | Landline | Tpx Communications |
| (925)644- | Landline | Fractel |
| (925)646- | Landline | Pacific Bell |
| (925)648- | Landline | Pacific Bell |
| (925)655- | Landline | Fractel |
| (925)658- | Landline | Teleport Communications America |
| (925)659- | Landline | Teleport Communications America |
| (925)660- | Landline | Level 3 Telecom Of California |
| (925)663- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)664- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)665- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)666- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)667- | Landline | Tpx Communications |
| (925)671- | Landline | Pacific Bell |
| (925)672- | Landline | Pacific Bell |
| (925)673- | Landline | Pacific Bell |
| (925)674- | Landline | Pacific Bell |
| (925)675- | Landline | Pacific Bell |
| (925)676- | Landline | Pacific Bell |
| (925)677- | Landline | Pacific Bell |
| (925)678- | Landline | Tpx Communications |
| (925)679- | Landline | Pacific Bell |
| (925)680- | Landline | Pacific Bell |
| (925)681- | Landline | Pacific Bell |
| (925)682- | Landline | Pacific Bell |
| (925)683- | Wireless | New Cingular Wireless Pcs |
| (925)684- | Landline | Pacific Bell |
| (925)685- | Landline | Pacific Bell |
| (925)686- | Landline | Pacific Bell |
| (925)687- | Landline | Pacific Bell |
| (925)688- | Landline | Pacific Bell |
| (925)689- | Landline | Pacific Bell |
| (925)690- | Landline | Mcimetro Access Transmission Services |
| (925)691- | Landline | Pacific Bell |
| (925)692- | Landline | Pacific Bell |
| (925)693- | Landline | Teleport Communications America |
| (925)694- | Landline | Mcimetro Access Transmission Services |
| (925)695- | Landline | Tpx Communications |
| (925)698- | Wireless | New Cingular Wireless Pcs |
| (925)699- | Wireless | New Cingular Wireless Pcs |
| (925)701- | Landline | Tpx Communications |
| (925)705- | Landline | Metropcs |
| (925)706- | Landline | Pacific Bell |
| (925)708- | Wireless | Verizon Wireless |
| (925)709- | Landline | Pacific Bell |
| (925)718- | Landline | Onvoy |
| (925)719- | Wireless | Verizon Wireless |
| (925)722- | Landline | Fractel |
| (925)723- | Landline | Tpx Communications |
| (925)724- | Landline | Tpx Communications |
| (925)725- | Landline | Tpx Communications |
| (925)726- | Landline | Tpx Communications |
| (925)727- | Landline | Tpx Communications |
| (925)730- | Landline | Pacific Bell |
| (925)732- | Landline | Onvoy |
| (925)733- | Landline | Fractel |
| (925)734- | Landline | Pacific Bell |
| (925)735- | Landline | Pacific Bell |
| (925)736- | Landline | Pacific Bell |
| (925)737- | Landline | Pacific Bell |
| (925)738- | Landline | Mcimetro Access Transmission Services |
| (925)742- | Landline | American Messaging Services |
| (925)743- | Landline | Pacific Bell |
| (925)744- | Landline | Fractel |
| (925)746- | Landline | Pacific Bell |
| (925)750- | Landline | Mcimetro Access Transmission Services |
| (925)752- | Landline | Mcimetro Access Transmission Services |
| (925)753- | Landline | Pacific Bell |
| (925)754- | Landline | Pacific Bell |
| (925)755- | Landline | Pacific Bell |
| (925)756- | Landline | Pacific Bell |
| (925)757- | Landline | Pacific Bell |
| (925)758- | Landline | Fractel |
| (925)759- | Wireless | New Cingular Wireless Pcs |
| (925)762- | Landline | Pacific Bell |
| (925)765- | Wireless | Sprint Spectrum |
| (925)766- | Wireless | Sprint Spectrum |
| (925)768- | Wireless | Verizon Wireless |
| (925)771- | Landline | Tpx Communications |
| (925)775- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)776- | Landline | Pacific Bell |
| (925)777- | Landline | Pacific Bell |
| (925)778- | Landline | Pacific Bell |
| (925)779- | Landline | Pacific Bell |
| (925)783- | Wireless | Verizon Wireless |
| (925)784- | Wireless | Verizon Wireless |
| (925)785- | Wireless | Verizon Wireless |
| (925)786- | Wireless | Verizon Wireless |
| (925)787- | Wireless | Verizon Wireless |
| (925)788- | Wireless | Verizon Wireless |
| (925)789- | Wireless | Verizon Wireless |
| (925)790- | Landline | Pacific Bell |
| (925)791- | Landline | Tpx Communications |
| (925)794- | Landline | Onvoy |
| (925)798- | Landline | Pacific Bell |
| (925)799- | Landline | Fractel |
| (925)800- | Landline | Onvoy |
| (925)803- | Landline | Pacific Bell |
| (925)804- | Landline | Teleport Communications America |
| (925)806- | Landline | Pacific Bell |
| (925)807- | Landline | Xo California |
| (925)808- | Landline | Pacific Bell |
| (925)809- | Landline | Tpx Communications |
| (925)812- | Landline | Metropcs |
| (925)813- | Wireless | Verizon Wireless |
| (925)815- | Landline | Pacific Bell |
| (925)817- | Landline | Pacific Bell |
| (925)818- | Wireless | New Cingular Wireless Pcs |
| (925)819- | Wireless | New Cingular Wireless Pcs |
| (925)820- | Landline | Pacific Bell |
| (925)822- | Landline | Mcimetro Access Transmission Services |
| (925)823- | Landline | Pacific Bell |
| (925)824- | Landline | Pacific Bell |
| (925)825- | Landline | Pacific Bell |
| (925)826- | Landline | Mcimetro Access Transmission Services |
| (925)827- | Landline | Pacific Bell |
| (925)828- | Landline | Pacific Bell |
| (925)829- | Landline | Pacific Bell |
| (925)830- | Landline | Pacific Bell |
| (925)831- | Landline | Pacific Bell |
| (925)832- | Landline | Ton80 Communications |
| (925)833- | Landline | Pacific Bell |
| (925)834- | Landline | Ton80 Communications |
| (925)835- | Landline | Tpx Communications |
| (925)837- | Landline | Pacific Bell |
| (925)838- | Landline | Pacific Bell |
| (925)839- | Landline | Tpx Communications |
| (925)842- | Landline | Pacific Bell |
| (925)843- | Landline | Level 3 Telecom Of California |
| (925)844- | Landline | Tpx Communications |
| (925)846- | Landline | Pacific Bell |
| (925)847- | Landline | Pacific Bell |
| (925)848- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)849- | Landline | Tpx Communications |
| (925)852- | Landline | Xo California |
| (925)854- | Landline | Mcimetro Access Transmission Services |
| (925)855- | Landline | Pacific Bell |
| (925)856- | Landline | Mcimetro Access Transmission Services |
| (925)858- | Wireless | New Cingular Wireless Pcs |
| (925)860- | Landline | Xo California |
| (925)862- | Landline | Pacific Bell |
| (925)864- | Wireless | Sprint Spectrum |
| (925)866- | Landline | Pacific Bell |
| (925)867- | Landline | Pacific Bell |
| (925)871- | Landline | Onvoy |
| (925)872- | Wireless | Verizon Wireless |
| (925)875- | Landline | Pacific Bell |
| (925)876- | Wireless | New Cingular Wireless Pcs |
| (925)877- | Landline | Fractel |
| (925)878- | Wireless | Sprint Spectrum |
| (925)880- | Landline | Fractel |
| (925)884- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)885- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)886- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)887- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)888- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)889- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)890- | Wireless | New Cingular Wireless Pcs |
| (925)891- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)892- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)895- | Wireless | Sprint Spectrum |
| (925)897- | Wireless | T-Mobile Usa |
| (925)899- | Wireless | New Cingular Wireless Pcs |
| (925)900- | Landline | Onvoy |
| (925)901- | Landline | Pacific Bell |
| (925)904- | Landline | Pacific Bell |
| (925)905- | Landline | Matrix Telecom, Llc. S/I/I Tnci |
| (925)906- | Landline | Pacific Bell |
| (925)913- | Wireless | T-Mobile Usa |
| (925)914- | Wireless | T-Mobile Usa |
| (925)915- | Wireless | T-Mobile Usa |
| (925)917- | Wireless | T-Mobile Usa |
| (925)918- | Wireless | Verizon Wireless |
| (925)920- | Wireless | Usa Mobility Wireless |
| (925)922- | Wireless | T-Mobile Usa |
| (925)924- | Landline | Pacific Bell |
| (925)925- | Landline | Onvoy |
| (925)926- | Landline | Pacific Bell |
| (925)927- | Landline | Pacific Bell |
| (925)930- | Landline | Pacific Bell |
| (925)931- | Landline | Pacific Bell |
| (925)932- | Landline | Pacific Bell |
| (925)933- | Landline | Pacific Bell |
| (925)934- | Landline | Pacific Bell |
| (925)935- | Landline | Pacific Bell |
| (925)937- | Landline | Pacific Bell |
| (925)938- | Landline | Pacific Bell |
| (925)939- | Landline | Pacific Bell |
| (925)940- | Landline | Onvoy |
| (925)941- | Landline | Pacific Bell |
| (925)942- | Landline | Pacific Bell |
| (925)943- | Landline | Pacific Bell |
| (925)944- | Landline | Pacific Bell |
| (925)945- | Landline | Pacific Bell |
| (925)946- | Landline | Pacific Bell |
| (925)947- | Landline | Pacific Bell |
| (925)948- | Landline | Mcimetro Access Transmission Services |
| (925)949- | Landline | Teleport Communications America |
| (925)951- | Landline | Mcimetro Access Transmission Services |
| (925)952- | Landline | Pacific Bell |
| (925)953- | Landline | Level 3 Telecom Of California |
| (925)954- | Landline | Tpx Communications |
| (925)955- | Landline | Utility Telecom Group |
| (925)956- | Landline | Xo California |
| (925)957- | Landline | Pacific Bell |
| (925)960- | Landline | Pacific Bell |
| (925)961- | Landline | Pacific Bell |
| (925)962- | Landline | Pacific Bell |
| (925)963- | Wireless | New Cingular Wireless Pcs |
| (925)964- | Landline | Pacific Bell |
| (925)965- | Landline | Teleport Communications America |
| (925)966- | Landline | Fractel |
| (925)967- | Landline | Pacific Bell |
| (925)968- | Landline | Pacific Bell |
| (925)969- | Landline | Pacific Bell |
| (925)973- | Landline | Pacific Bell |
| (925)974- | Landline | Pacific Bell |
| (925)975- | Landline | Pacific Bell |
| (925)977- | Landline | Pacific Bell |
| (925)978- | Landline | Pacific Bell |
| (925)979- | Landline | Pacific Bell |
| (925)980- | Wireless | New Cingular Wireless Pcs |
| (925)983- | Landline | Mcimetro Access Transmission Services |
| (925)984- | Wireless | Sprint Spectrum |
| (925)988- | Landline | Pacific Bell |
| (925)989- | Wireless | Verizon Wireless |
| (925)990- | Landline | Utility Telecom Group |
| (925)993- | Landline | Wide Voice |
| (925)997- | Wireless | New Cingular Wireless Pcs |
| (925)998- | Wireless | New Cingular Wireless Pcs |
| (925)999- | Wireless | Verizon Wireless |
| No prefixes match “”. | ||
Frequently Asked Questions about the 925 Area Code
Who called me from a 925 number?
A 925 number is assigned to Concord, California, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 925 code to look nearby, so a 925 number doesn't prove the caller is local. Recently, 1,604 unwanted-call complaints were reported to the FTC for numbers showing the 925 code (65% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 925 a scam area code?
No area code is a scam on its own. 925 is a normal, officially assigned code for Concord, California. Spam callers spoof local codes to raise the odds you answer, so 925 on your caller ID says nothing about who is really calling. Recently, 1,604 unwanted-call complaints were reported to the FTC for numbers showing the 925 code (65% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 925 area code?
Repeated calls from different 925 numbers are usually spoofing: a robocaller rotates through 925 numbers so each call looks local and slips past simple blocks. Recently, 1,604 unwanted-call complaints were reported to the FTC for numbers showing the 925 code (65% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 925 number?
If you aren't expecting a 925 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 925 area code?
Block a single 925 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 925 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 925?
Area code 925 covers Concord and the surrounding area in California, spanning 41 cities with about 1,134,632 residents. No other code overlays this region, so 925 alone identifies the area.
When did area code 925 go into service?
Area code 925 went into service on March 14, 1998. It was split off from area code 510.
Is 925 a real area code?
Yes. 925 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Concord, California. A real code can still show up on spoofed spam calls, so treat unknown 925 calls with normal caution.
What timezone is the 925 area code in?
The 925 area code is in the Pacific Time (PT). Because a number can be kept when someone moves or switches to VoIP, a specific 925 caller may not be in that zone.
How do I call a 925 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 925 and the seven-digit number. From a mobile phone you can usually just enter +1 925 followed by the number and let the phone add the exit code for you.