248 Area CodeTroy, MI
Area code 248 covers Troy and nearby communities in Michigan, in the Eastern Time (ET) zone, home to about 911,000 people across 41 cities. It overlays 947, so the same region uses both and every local call needs all ten digits.
Where is area code 248?
Area code 248 serves part of Troy, MI and the surrounding areas. It has a single overlay (947) that serves the same area.
Overview of the 248 Area Code
What is the 248 area code?
The 248 area code serves Troy, Michigan, alongside other established area codes. When you see a 248 number, it indicates a local number within this geographic area.
Why was area code 248 created?
The 248 area code was introduced as an overlay to add numbers in Troy once the existing area code 947 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 248 Area Code
The 248 area code serves Troy and surrounding areas in Michigan. It operates within the Eastern Time (ET) time zone. It complements the coverage of area code 947. This area code covers several key cities, including:
- Livonia
- Troy
- Farmington Hills
- Rochester Hills
- Southfield
- Novi
Got a call from a 248 number? It came from Troy, MI. Since 248 overlays with 947, every local call in the region needs all ten digits to land on the right line. Inside 248, Troy holds about 10% of the population; the rest is split across 40 smaller cities.
Troy Area Codes Overview
Troy is served by multiple area codes, reflecting its telecommunications needs. The 248 area code operates alongside 947. Here are the area codes serving this region:
The introduction of the 248 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 248 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Livonia | MI | 93,113 | 1% | 21% |
| Troy | MI | 89,209 | 3% | 100% |
| Farmington Hills | MI | 84,173 | 3% | 100% |
| Rochester Hills | MI | 78,330 | 3% | 100% |
| Southfield | MI | 76,874 | 3% | 100% |
| Novi | MI | 67,675 | 3% | 100% |
| Pontiac | MI | 62,528 | 2% | 100% |
| Royal Oak | MI | 58,251 | 1% | 100% |
| Oak Park | MI | 29,402 | 1% | 100% |
| Madison Heights | MI | 28,626 | 1% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 248 been reported for unwanted calls?
Yes – 451 unwanted-call complaints were reported to the FTC for numbers showing a 248 area code (May 29 – Jul 2, 2026).
- 56% robocalls
- ↑ 28% vs prior period
Most-reported subjects
- Other43%194
- Calls pretending to be government, businesses, or family and friends20%92
- Medical & prescriptions9%42
* 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 2026-07-05.
Which prefixes and exchanges belong to area code 248?
78% assigned to a telco
- 76% Landline
- 24% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (248)200- | Landline | Talk America |
| (248)201- | Wireless | Verizon Wireless |
| (248)202- | Wireless | New Cingular Wireless Pcs |
| (248)203- | Landline | Michigan Bell Tel Co |
| (248)204- | Landline | Teleport Communications America |
| (248)205- | Landline | Teleport Communications America |
| (248)206- | Landline | Level 3 Communications |
| (248)207- | Wireless | Verizon Wireless |
| (248)208- | Landline | Michigan Bell Tel Co |
| (248)209- | Landline | Mcimetro Access Transmission Services |
Frequently Asked Questions about the 248 Area Code
Who called me from a 248 number?
A 248 number is assigned to Troy, Michigan, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 248 code to look nearby, so a 248 number doesn't prove the caller is local. Recently, 451 unwanted-call complaints were reported to the FTC for numbers showing the 248 code (56% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 248 a scam area code?
No area code is a scam on its own. 248 is a normal, officially assigned code for Troy, Michigan. Spam callers spoof local codes to raise the odds you answer, so 248 on your caller ID says nothing about who is really calling. Recently, 451 unwanted-call complaints were reported to the FTC for numbers showing the 248 code (56% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 248 area code?
Repeated calls from different 248 numbers are usually spoofing: a robocaller rotates through 248 numbers so each call looks local and slips past simple blocks. Recently, 451 unwanted-call complaints were reported to the FTC for numbers showing the 248 code (56% 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 248 number?
If you aren't expecting a 248 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 248 area code?
Block a single 248 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 248 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 248?
Area code 248 covers Troy and the surrounding area in Michigan, spanning 41 cities with about 910,661 residents. It shares its area with overlay code 947.
Is 248 a real area code?
Yes. 248 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Troy, Michigan. A real code can still show up on spoofed spam calls, so treat unknown 248 calls with normal caution.
What timezone is the 248 area code in?
The 248 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 248 caller may not be in that zone.
How do I call a 248 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 248 and the seven-digit number. From a mobile phone you can usually just enter +1 248 followed by the number and let the phone add the exit code for you.