205 area code — Birmingham, AL geographic

Data: NANPA public reports, current as of July 28, 2026.

The 205 area code covers Birmingham, Alabama, Central time zone, and dates back to January 1, 1947. Together with 659 it forms the 205/659 overlay. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.

NANPA lists 784 active NXX prefixes in 205, assigned to 52 carriers. 512 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 70 rate centers (billing localities).

Official projections put exhaust for the 205/659 complex at 1Q 2066.

The dialing plan is 10D for home-NPA local calls and 10D across codes.

Worth noting: 205 is the oldest area code in Alabama, in service since 1947.

Practical takeaway: the 205 label narrows geography to Alabama, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.

Later relief produced 334 (1995), 256 (1998), 659 (2019) from its territory.

Largest localities in 205

FAQ

Why do 659 and 205 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 205/659 complex shares one service area, and local calls are dialed with 10 digits.

Will 205 run out of numbers?

NANPA's current forecast projects exhaust in 1Q 2066 — decades of capacity remain.

Why am I getting spam calls from 205 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 205 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 205 number from?

205 is assigned to Birmingham and surrounding areas of Alabama in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.