Codes.zone

Hamilton County ZIP Codes

Hamilton County is a county of Ohio.

ZIP codes
78
Cities & towns
10
Area codes
2
Land area
405 sq mi

Every ZIP code in Hamilton County

450xx–459xx
The complete list of Hamilton County, OH ZIP codes with the city each one delivers to.
ZIP codeCity
45001Addyston
45002Cleves
45030Harrison
45033Hooven
45041Miamitown
45051Mount Saint Joseph
45052North Bend
45111Camp Dennison
45174Terrace Park
45201Cincinnati
45202Cincinnati
45203Cincinnati
45204Cincinnati
45205Cincinnati
45206Cincinnati
45207Cincinnati
45208Cincinnati
45209Cincinnati
45211Cincinnati
45212Cincinnati
45213Cincinnati
45214Cincinnati
45215Cincinnati
45216Cincinnati
45217Cincinnati
45218Cincinnati
45219Cincinnati
45220Cincinnati
45221Cincinnati
45222Cincinnati
45223Cincinnati
45224Cincinnati
45225Cincinnati
45226Cincinnati
45227Cincinnati
45229Cincinnati
45230Cincinnati
45231Cincinnati
45232Cincinnati
45233Cincinnati
45234Cincinnati
45235Cincinnati
45236Cincinnati
45237Cincinnati
45238Cincinnati
45239Cincinnati
45240Cincinnati
45241Cincinnati
45242Cincinnati
45243Cincinnati
45244Cincinnati
45246Cincinnati
45247Cincinnati
45248Cincinnati
45249Cincinnati
45250Cincinnati
45251Cincinnati
45252Cincinnati
45253Cincinnati
45254Cincinnati
45255Cincinnati
45258Cincinnati
45262Cincinnati
45263Cincinnati
45264Cincinnati
45267Cincinnati
45268Cincinnati
45269Cincinnati
45270Cincinnati
45271Cincinnati
45273Cincinnati
45274Cincinnati
45277Cincinnati
45280Cincinnati
45296Cincinnati
45298Cincinnati
45299Cincinnati
45999Cincinnati

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Hamilton County

A further 4 places in Hamilton 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 Hamilton County

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

Where Hamilton County's ZIP codes sit

Each point is the reference point of one Hamilton 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 Hamilton 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.