Kennebec County ZIP Codes

Kennebec County is a county of Maine.

ZIP codes
34
Cities & towns
29
Area codes
1
Land area
867 sq mi

Every ZIP code in Kennebec County

042xx–049xx
The complete list of Kennebec County, ME ZIP codes with the city each one delivers to.
ZIP codeCity
04259Monmouth
04265North Monmouth
04284Wayne
04330Augusta
04332Augusta
04333Augusta
04336Augusta
04338Augusta
04343East Winthrop
04344Farmingdale
04345Gardiner
04346Randolph
04347Hallowell
04349Kents Hill
04350Litchfield
04351Manchester
04352Mount Vernon
04355Readfield
04358South China
04359South Gardiner
04360Vienna
04363Windsor
04364Winthrop
04901Waterville
04903Waterville
04910Albion
04917Belgrade
04918Belgrade Lakes
04926China Village
04927Clinton
04935East Vassalboro
04962North Vassalboro
04963Oakland
04989Vassalboro

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Kennebec County

A further 25 places in Kennebec County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Kennebec County

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

Where Kennebec County's ZIP codes sit

Each point is the reference point of one Kennebec 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 Kennebec 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 . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.