Cook County ZIP Codes

Cook County is a county of Georgia.

ZIP codes: 4
Cities & towns: 4
Area codes: 1
Land area: 228 sq mi

Every ZIP code in Cook County

316xx

The complete list of Cook County, GA ZIP codes with the city each one delivers to.
ZIP code	City
31620	Adel
31627	Cecil
31637	Lenox
31647	Sparks

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Cook County codes above are listed without a column we would have to invent.

Cities and towns in Cook County

Area codes covering Cook County

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

229 Area code 229

Where Cook County's ZIP codes sit

Each point is the reference point of one Cook 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 Cook 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.