Every area code in Iowa

All Iowa area codes, what each primarily serves, and which share ground with another.
Area code	Primarily serves	In service
319	Cedar Rapids	1947
515	Des Moines	1947
563	Davenport	2001
641	Cedar Falls	2000
712	Sioux City	1947

Which codes share the same ground

No Iowa 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 Iowa's communities sit

Each point is an Iowa 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 Iowa cities and their codes

largest 25

Scope every area code assigned to Iowa. 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.