Hawaii Area Codes

Area codes: 1
ZIP codes: 137
Cities & towns: 91
Counties: 5

Every area code in Hawaii

All Hawaii area codes, what each primarily serves, and which share ground with another.
Area code	Primarily serves	In service
808	Aiea	1957

Which codes share the same ground

No Hawaii code shares its territory with another — each covers its own area, so an area code here still corresponds to a single part of the state.

Where Hawaii's communities sit

Each point is a Hawaii 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 Hawaii cities and their codes

largest 25

Scope every area code assigned to Hawaii. 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.