Hamilton Ohio ZIP Codes

Hamilton holds 4 ZIP codes, all inside one county and one postal prefix.

Every ZIP code in Hamilton

The complete list of Hamilton, Ohio ZIP codes with the county each falls in.
ZIP code	County
45011	Butler County
45012	Butler County
45013	Butler County
45015	Butler County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Scope every ZIP code recorded for Hamilton. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Hamilton ZIP code begins 450. Those first three digits identify the sectional center facility that processes mail for this part of Ohio. Statewide that range covers 39 ZIP codes, so Hamilton accounts for 10% of it.

Every Ohio ZIP prefix and the region it covers →

Area codes covering Hamilton

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Hamilton occupies.

Hamilton Ohio area codes in full →

Where Hamilton's ZIP codes sit

Each point is one Hamilton 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

Cities near Hamilton

The closest places to Hamilton with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Fairfield Ohio ZIP codes	4.5 mi	2 ZIP codes
Seven Mile Ohio ZIP codes	6.4 mi	1 ZIP code
Trenton Ohio ZIP codes	7.9 mi	1 ZIP code
West Chester Ohio ZIP codes	9.5 mi	2 ZIP codes
Monroe Ohio ZIP codes	11 mi	1 ZIP code
Oxford Ohio ZIP codes	12 mi	1 ZIP code
Middletown Ohio ZIP codes	13 mi	2 ZIP codes
West Elkton Ohio ZIP codes	13 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.