Hamilton, OH ZIP Codes
Hamilton, Ohio has 5 ZIP codes: 3 for street addresses (, and ) and 2 for PO boxes ( and ).
Your street decides which one you use.
Which Hamilton ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Hamilton ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
45004 and 45012 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Hamilton city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Hamilton ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 45004 | PO boxes at the Hamilton post office Hamilton |
| 45011 | street delivery Fairfield |
| 45012 | PO boxes at the Hamilton post office Hamilton |
| 45013 | street delivery Hamilton |
| 45015 | street delivery Fairfield |
Why your mail may say Hamilton when you live outside it
Hamilton ZIP codes also cover Hanover Township, Ross Township and St. Clair Township, so a letter addressed to Hamilton can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Butler County property records show which city you are in.
Hamilton ZIP code questions
What is the main ZIP code for Hamilton?
45013, the ZIP code of the main Hamilton post office at 105 Court St.
Which Hamilton ZIP codes are for PO boxes only?
45004 and 45012. Mail to them goes to boxes at the post office, not to street addresses.
What county is Hamilton in?
Butler County.
ZIP codes for towns near Hamilton
More towns near Hamilton: Kettering, Dayton, Richmond, Beavercreek, Huber Heights, Fairborn, Springfield, Muncie, Columbus.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections