645 Area CodeMiami, FL
Area code 645 covers Miami and nearby communities in Florida, in the Eastern Time (ET) zone, home to about 2,768,520 people across 86 cities. It was added in 2023 as an overlay of 305, so the same region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Miami
- State
- Florida (FL)
- Timezone
- Eastern Time (ET)
- Current Time
- –:––
- Overlay
- Yes – shares area with 305, 786
Overview of the 645 Area Code
What is the 645 area code?
The 645 area code serves Miami, Florida, alongside other established area codes. When you see a 645 number, it indicates a local number within this geographic area.
Why was area code 645 created?
Area code 645 went into service on August 4, 2023, as an overlay of 305. An overlay adds a second code to the same territory instead of splitting it: existing 305 numbers kept their digits, new lines began receiving 645 numbers, and local calls in the region require all ten digits. The same territory also carries 786.
Geographic Coverage of the 645 Area Code
The 645 area code serves Miami and surrounding areas in Florida. It operates within the Eastern Time (ET) time zone. It complements the coverage of area codes 305 and 786. This area code covers several key cities, including:
- Miami
- Hialeah
- Miramar
- Miami Gardens
- Homestead
- Doral
Got a call from a 645 number? It came from Miami, FL. Since 645 overlays with 305 and 786, every local call in the region needs all ten digits to land on the right line. Of the listed cities' population, Miami accounts for about 17.9%; the rest is split across 85 smaller cities.
Miami Area Codes Overview
Miami is served by multiple area codes, reflecting its telecommunications needs. The 645 area code operates alongside 305, 786. Here are the area codes serving this region:
The introduction of the 645 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 645 cover?
| City | State | Population | Population in 645 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Miami | FL | 487,014 | 485,073 | 17.9% | 99.6% |
| Hialeah | FL | 235,388 | 235,388 | 8.7% | 100.0% |
| Miramar | FL | 143,242 | 14,935 | 5.3% | 10.4% |
| Miami Gardens | FL | 116,173 | 116,173 | 4.3% | 100.0% |
| Homestead | FL | 85,796 | 85,796 | 3.2% | 100.0% |
| Doral | FL | 83,625 | 83,625 | 3.1% | 100.0% |
| Miami Beach | FL | 83,251 | 77,302 | 3.1% | 92.9% |
| Kendall | FL | 75,371 | 75,371 | 2.8% | 100.0% |
| North Miami | FL | 62,202 | 62,202 | 2.3% | 100.0% |
| Fountainebleau | FL | 59,764 | 59,764 | 2.2% | 100.0% |
| Kendale Lakes | FL | 56,148 | 56,148 | 2.1% | 100.0% |
| Tamiami | FL | 55,271 | 55,271 | 2.0% | 100.0% |
| The Hammocks | FL | 51,003 | 51,003 | 1.9% | 100.0% |
| Coral Gables | FL | 50,379 | 50,379 | 1.8% | 100.0% |
| Country Club | FL | 47,105 | 47,105 | 1.7% | 100.0% |
| Cutler Bay | FL | 45,833 | 45,833 | 1.7% | 100.0% |
| North Miami Beach | FL | 45,655 | 45,655 | 1.7% | 100.0% |
| Aventura | FL | 40,531 | 40,531 | 1.5% | 100.0% |
| Kendall West | FL | 36,154 | 36,154 | 1.3% | 100.0% |
| South Miami Heights | FL | 35,696 | 35,696 | 1.3% | 100.0% |
| West Little River | FL | 34,699 | 34,699 | 1.3% | 100.0% |
| Miami Lakes | FL | 33,247 | 33,247 | 1.2% | 100.0% |
| Golden Glades | FL | 33,145 | 33,145 | 1.2% | 100.0% |
| Richmond West | FL | 31,973 | 31,973 | 1.2% | 100.0% |
| Westchester | FL | 29,862 | 29,862 | 1.1% | 100.0% |
| University Park | FL | 26,995 | 26,995 | 1.0% | 100.0% |
| Palmetto Bay | FL | 25,402 | 25,402 | 0.9% | 100.0% |
| Key West | FL | 25,240 | 25,240 | 0.9% | 100.0% |
| Coral Terrace | FL | 24,376 | 24,376 | 0.9% | 100.0% |
| Hialeah Gardens | FL | 23,328 | 23,328 | 0.9% | 100.0% |
| Sunny Isles Beach | FL | 22,903 | 21,348 | 0.8% | 93.2% |
| The Crossings | FL | 22,758 | 22,758 | 0.8% | 100.0% |
| Leisure City | FL | 22,655 | 22,655 | 0.8% | 100.0% |
| Princeton | FL | 22,038 | 22,038 | 0.8% | 100.0% |
| Sweetwater | FL | 21,321 | 21,321 | 0.8% | 100.0% |
| Ives Estates | FL | 19,525 | 19,525 | 0.7% | 100.0% |
| Pinecrest | FL | 18,981 | 18,981 | 0.7% | 100.0% |
| Ojus | FL | 18,036 | 18,036 | 0.7% | 100.0% |
| Glenvar Heights | FL | 16,898 | 16,898 | 0.6% | 100.0% |
| Pinewood | FL | 16,520 | 16,520 | 0.6% | 100.0% |
| Opa-locka | FL | 16,507 | 16,507 | 0.6% | 100.0% |
| Sunset | FL | 16,389 | 16,389 | 0.6% | 100.0% |
| Country Walk | FL | 15,997 | 15,997 | 0.6% | 100.0% |
| Brownsville | FL | 15,313 | 15,313 | 0.6% | 100.0% |
| Key Biscayne | FL | 15,111 | 15,111 | 0.6% | 100.0% |
| Three Lakes | FL | 15,047 | 15,047 | 0.6% | 100.0% |
| Miami Springs | FL | 13,901 | 13,901 | 0.5% | 100.0% |
| Palmetto Estates | FL | 13,535 | 13,535 | 0.5% | 100.0% |
| Olympia Heights | FL | 13,488 | 13,488 | 0.5% | 100.0% |
| South Miami | FL | 13,207 | 13,207 | 0.5% | 100.0% |
| Florida City | FL | 13,157 | 13,157 | 0.5% | 100.0% |
| Miami Shores | FL | 11,917 | 11,917 | 0.4% | 100.0% |
| Westwood Lakes | FL | 11,838 | 11,838 | 0.4% | 100.0% |
| Gladeview | FL | 11,535 | 11,535 | 0.4% | 100.0% |
| Key Largo | FL | 10,433 | 10,433 | 0.4% | 100.0% |
| Goulds | FL | 10,103 | 10,103 | 0.4% | 100.0% |
| Marathon | FL | 10,039 | 10,039 | 0.4% | 100.0% |
| Westview | FL | 9,650 | 9,650 | 0.4% | 100.0% |
| West Perrine | FL | 9,460 | 9,460 | 0.3% | 100.0% |
| Richmond Heights | FL | 8,541 | 8,541 | 0.3% | 100.0% |
| Naranja | FL | 8,303 | 8,303 | 0.3% | 100.0% |
| North Bay Village | FL | 8,286 | 8,286 | 0.3% | 100.0% |
| West Miami | FL | 7,247 | 7,247 | 0.3% | 100.0% |
| Islamorada, Village of Islands | FL | 6,119 | 6,119 | 0.2% | 100.0% |
| Bay Harbor Islands | FL | 5,937 | 5,937 | 0.2% | 100.0% |
| Surfside | FL | 5,719 | 5,719 | 0.2% | 100.0% |
| Palm Springs North | FL | 5,253 | 5,253 | 0.2% | 100.0% |
| Big Pine Key | FL | 4,252 | 4,252 | 0.2% | 100.0% |
| Stock Island | FL | 3,919 | 3,919 | 0.1% | 100.0% |
| Biscayne Park | FL | 3,123 | 3,123 | 0.1% | 100.0% |
| Bal Harbour | FL | 3,099 | 3,099 | 0.1% | 100.0% |
| Big Coppitt Key | FL | 2,458 | 2,458 | 0.1% | 100.0% |
| Virginia Gardens | FL | 2,358 | 2,358 | 0.1% | 100.0% |
| Tavernier | FL | 2,136 | 2,136 | 0.1% | 100.0% |
| El Portal | FL | 1,980 | 1,980 | 0.1% | 100.0% |
| Cudjoe Key | FL | 1,763 | 0 | 0.1% | 0.0% |
| North Key Largo | FL | 1,244 | 1,244 | 0.0% | 100.0% |
| Medley | FL | 1,102 | 1,102 | 0.0% | 100.0% |
| Golden Beach | FL | 1,034 | 1,034 | 0.0% | 100.0% |
| Homestead Base | FL | 964 | 964 | 0.0% | 100.0% |
| Key Colony Beach | FL | 749 | 749 | 0.0% | 100.0% |
| Duck Key | FL | 621 | 621 | 0.0% | 100.0% |
| Layton | FL | 208 | 208 | 0.0% | 100.0% |
| Fisher Island | FL | 132 | 132 | 0.0% | 100.0% |
| Indian Creek | FL | 89 | 89 | 0.0% | 100.0% |
| Islandia | FL | 18 | 2 | 0.0% | 12.0% |
City population is shown in full. The share of each city inside 645 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.
What counties does area code 645 cover?
2,768,520 residents across 3 counties, counted inside the 645 boundary — a county split between codes contributes only its part.
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 645 been reported for unwanted calls?
Yes – 339 unwanted-call complaints were reported to the FTC for numbers showing a 645 area code (May 29 – Aug 14, 2026).
- 69% robocalls
- ↑ 105% vs prior period
Most-reported subjects
- Other34%116
- Reducing your debt (credit cards, mortgage, student loans)33%111
- Dropped call or no message8%27
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.
Frequently Asked Questions about the 645 Area Code
Who called me from a 645 number?
A 645 number is assigned to Miami, Florida, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 645 code to look nearby, so a 645 number doesn't prove the caller is local. Recently, 339 unwanted-call complaints were reported to the FTC for numbers showing the 645 code (69% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 645 a scam area code?
No area code is a scam on its own. 645 is a normal, officially assigned code for Miami, Florida. Spam callers spoof local codes to raise the odds you answer, so 645 on your caller ID says nothing about who is really calling. Recently, 339 unwanted-call complaints were reported to the FTC for numbers showing the 645 code (69% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 645 area code?
Repeated calls from different 645 numbers are usually spoofing: a robocaller rotates through 645 numbers so each call looks local and slips past simple blocks. Recently, 339 unwanted-call complaints were reported to the FTC for numbers showing the 645 code (69% 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 645 number?
If you aren't expecting a 645 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 645 area code?
Block a single 645 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 645 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 645?
Area code 645 covers Miami and the surrounding area in Florida, spanning 86 cities with about 2,768,520 residents. It shares its area with overlay codes 305, 786.
When did area code 645 go into service?
Area code 645 went into service on August 4, 2023. It was added as an overlay of 305, so 645 numbers serve the same area that 305 already covered.
Is 645 a real area code?
Yes. 645 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Miami, Florida. A real code can still show up on spoofed spam calls, so treat unknown 645 calls with normal caution.
What timezone is the 645 area code in?
The 645 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 645 caller may not be in that zone.
How do I call a 645 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 645 and the seven-digit number. From a mobile phone you can usually just enter +1 645 followed by the number and let the phone add the exit code for you.