Florida · Eastern Time
305 Area Code
Area code 305 is in Florida, serving Miami-Dade County and the Florida Keys. It is in the Eastern Time zone. It shares its territory with overlay codes 645 and 786, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 305 area code?
305 is a Florida area code covering Miami-Dade County and the Florida Keys. In the wider directory it sits in the South region.
Cities in the 305 area code
- Miami
- Hialeah
- Miami Gardens
- Miami Beach
- Homestead
- Kendall
- Doral
- Coral Gables
- North Miami
- Cutler Bay
- Aventura
- Key West
- Key Largo
- Marathon
Counties served by 305
Miami-Dade County and Monroe County.
Time zone note: Most of Florida is Eastern; the western Panhandle (around Pensacola) is Central.
305 overlay codes and dialing
The 305 territory is covered by an overlay of 3 area codes: 305, 645, 786. All of them serve the same geographic area, and the original code is 305. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 305 area code
305 is one of the original area codes assigned in 1947, when AT&T and Bell Laboratories created the North American Numbering Plan and divided the country into the first 86 numbering plan areas. It has served the Miami area ever since, with 645 and 786 later added as overlays to supply more numbers.
Is 305 a scam or spam risk?
305 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 305 number on your screen is no guarantee the caller is in Miami, FL or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Florida area codes
Explore more
See every code in Florida, compare codes across the South region, or view all Eastern Time codes. You can also browse the 3XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
305 area code FAQ
Where is the 305 area code?
The 305 area code is in Florida, covering Miami-Dade County and the Florida Keys, in the South region.
What cities are in the 305 area code?
Cities in the 305 area code include Miami, Hialeah, Miami Gardens, Miami Beach, Homestead, Kendall, Doral, Coral Gables, North Miami and Cutler Bay.
What time zone is 305 in?
305 is in the Eastern Time zone. Most of Florida is Eastern; the western Panhandle (around Pensacola) is Central.
What is the overlay for the 305 area code?
305 shares its territory with 645 and 786. All 3 codes (305, 645, 786) serve the same area, so 10-digit dialing is required for every call.
When did the 305 area code start?
305 went into service on January 1, 1947 as one of the original 1947 North American area codes.
Do I have to dial 10 digits for 305?
Yes. Because 305 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 305 a toll-free or premium code?
No. 305 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.