North American Numbers Source-cited · ownership disclosed
Area code
207
In service
United States · since 1947

Maine (statewide)

Area code 207 is the sole telephone area code for the entire U.S. state of Maine. It is an original 1947 area code that has never been split or overlaid.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Maine (statewide)
Type
geographic
Status
in service
In service since
1947
Projected exhaust
2049 Q1

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 207 is

The entire state of Maine, all 16 counties..

Communities served wholly or partly by 207:

PortlandLewistonBangorAugustaBrunswickBiddeford

A few communities on the Canadian border route through Quebec numbering instead.

B · Relationships

How it relates to other codes

The codes 207 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

What's changing. No overlay. Single statewide code. Exhaustion not projected until roughly 2045.
C · History

How 207 got here

1947
Assigned as one of the original North American area codes; boundaries unchanged ever since.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
763
Prefixes available
37
Thousands-blocks assigned
3,444

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 207 with another code →
Sources
Wikipedia ↗
Area code 207
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.