Ada County ZIP Codes

Ada County is a county of Idaho.

ZIP codes: 34
Cities & towns: 6
Area codes: 2
Land area: 1,052 sq mi

Every ZIP code in Ada County

836xx–837xx

The complete list of Ada County, ID ZIP codes with the city each one delivers to.
ZIP code	City
83616	Eagle
83634	Kuna
83642	Meridian
83669	Star
83680	Meridian
83701	Boise
83702	Boise
83703	Boise
83704	Boise
83705	Boise
83706	Boise
83707	Boise
83708	Boise
83709	Boise
83711	Boise
83712	Boise
83713	Boise
83714	Garden City
83715	Boise
83716	Boise
83717	Boise
83719	Boise
83720	Boise
83722	Boise
83724	Boise
83725	Boise
83726	Boise
83728	Boise
83729	Boise
83731	Boise
83732	Boise
83735	Boise
83756	Boise
83799	Boise

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Ada County codes above are listed without a column we would have to invent.

Cities and towns in Ada County

Area codes covering Ada County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Ada County's ZIP codes sit

Each point is the reference point of one Ada County ZIP code, 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

Scope every ZIP code recorded in Ada County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.