305 area code — Miami, FL geographic
- State
- Florida
- Major area
- Miami
- Time zone
- Eastern
- In service since
- 1947-01-01
- Active prefixes
- 784
- Rate centers
- 5
- Carriers
- 27
- Projected exhaust
- 3Q 2046
Phone numbers beginning 305 are registered to the Miami area of Florida (Eastern time zone). The code entered service on January 1, 1947. The same territory is also served by its overlay codes (305/645/786 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 784 working prefixes, held by 27 different carriers. Of these, 333 are pooled prefixes shared by multiple carriers. Numbers are anchored to 5 rate centers — billing localities that fix where each prefix belongs.
If a 305 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
As demand grew it in turn gave rise to 407 (1988), 954 (1995), 786 (1998), 645 (2023).
The current NANPA exhaust forecast for the 305/645/786 complex is 3Q 2046.
Local calls inside 305 are dialed 10D; 1+10 permissive dialing at service provider discretion.
Among Florida codes, 305 stands out as the oldest area code in Florida, in service since 1947.
Largest localities in 305
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Miami | 489 | 645, 786 |
| Keys | 138 | 645, 786 |
| North Dade | 112 | 645, 786 |
| Perrine | 32 | 645, 786 |
| Homestead | 13 | 645, 786 |
FAQ
Why do 645 and 305 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 305/645/786 complex shares one service area, and local calls are dialed with 10 digits.
Will 305 run out of numbers?
NANPA's current forecast projects exhaust in 3Q 2046 — decades of capacity remain.
Why am I getting spam calls from 305 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 305 number does not prove the call originated there — see our guide to spotting spoofed calls.