Fairfield County ZIP Codes

Fairfield County is a county of Ohio.

ZIP codes: 14
Cities & towns: 14
Area codes: 4
Land area: 504 sq mi

Every ZIP code in Fairfield County

430xx–431xx

The complete list of Fairfield County, OH ZIP codes with the city each one delivers to.
ZIP code	City
43046	Millersport
43102	Amanda
43105	Baltimore
43107	Bremen
43110	Canal Winchester
43112	Carroll
43130	Lancaster
43136	Lithopolis
43147	Pickerington
43148	Pleasantville
43150	Rushville
43154	Stoutsville
43155	Sugar Grove
43157	Thurston

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Fairfield County

Area codes covering Fairfield County

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

Where Fairfield County's ZIP codes sit

Each point is the reference point of one Fairfield 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 Fairfield 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.