Alabama Area Codes

Area codes: 7
ZIP codes: 811
Cities & towns: 575
Counties: 67

Every area code in Alabama

All Alabama area codes, what each primarily serves, and which share ground with another.
Area code	Primarily serves	Shares ground with	In service
205	Birmingham	659	1947
251	Mobile	no overlay	2001
256	Huntsville	938	1998
334	Montgomery	483	1995
483	Montgomery	334	2026
659	Birmingham	205	2019
938	Huntsville	256	2010

A code in the “shares ground” column is an overlay: it covers the same territory rather than a different part of Alabama, which is why local calls there are dialled as ten digits.

Which codes share the same ground

Alabama has 3 groups of codes that overlay one another: the codes inside a group cover the same territory rather than different parts of the state, so local calls there are dialled as ten digits.

251 has no overlay: it is the only code serving its territory.

Where Alabama's communities sit

Each point is an Alabama community, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Largest Alabama cities and their codes

largest 25

Scope every area code assigned to Alabama. Source LocalCallingGuide NPA list (2026-07 NPA list) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. Overlay relationships come from the numbering-plan authority; the city match is computed.