Butler County, Ohio ZIP codes
20 ZIP codes are in Butler County, plus 4 that cross in from neighboring counties. It's part of the Cincinnati, OH-KY-IN metro area.
- ZIP codes
- 20
- Population in these ZIPs
- 389,474
- Avg. median income
- $82,500population-weighted
- Cities & towns
- 14
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Butler County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 45004 PO Box | Collinsville | — | — | — |
| 45011 | Hamilton | 75,864 | $91,873 | $370,800 |
| 45012 PO Box | Hamilton | — | — | — |
| 45013 | Hamilton | 53,998 | $73,633 | $270,600 |
| 45014 | Fairfield | 45,773 | $75,661 | $284,000 |
| 45015 | Hamilton | 11,038 | $48,312 | $178,400 |
| 45018 PO Box | Fairfield | — | — | — |
| 45042 | Middletown | 27,652 | $69,520 | $248,300 |
| 45044 | Middletown | 56,217 | $73,732 | $263,000 |
| 45050 | Monroe | 12,248 | $104,282 | $352,100 |
| 45053 | Okeana | 3,718 | $109,148 | $460,800 |
| 45055 | Overpeck | 198 | — | — |
| 45056 | Oxford | 27,376 | $49,233 | $343,400 |
| 45061 PO Box | Ross | — | — | — |
| 45062 | Seven Mile | 511 | $52,917 | $218,800 |
| 45063 PO Box | Shandon | — | — | — |
| 45064 | Somerville | 3,373 | $102,531 | $291,500 |
| 45067 | Trenton | 15,471 | $81,605 | $274,100 |
| 45069 | West Chester | 56,037 | $114,631 | $423,500 |
| 45071 PO Box | West Chester | — | — | — |
ZIP codes partly in Butler County
These ZIP codes are mostly in a neighboring county but cover part of Butler County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 45003 | College Corner | Preble County | 839 | $71,250 | $193,400 |
| 45241 | Cincinnati | Hamilton County | 23,955 | $103,585 | $392,900 |
| 45246 | Cincinnati | Hamilton County | 13,527 | $65,370 | $247,000 |
| 45327 | Germantown | Montgomery County | 9,315 | $94,741 | $268,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Butler County
Nearby counties
Frequently asked questions
How many ZIP codes are in Butler County, Ohio?
20 ZIP codes are mainly in Butler County, and 4 more ZIP codes from neighboring areas reach partly into it.
What cities are in Butler County?
ZIP codes in Butler County use the city names Collinsville, Fairfield, Hamilton, Middletown, Monroe, Okeana, Overpeck, Oxford, Ross, Seven Mile, Shandon and Somerville and others.
What metro area is Butler County in?
Butler County is part of the Cincinnati, OH-KY-IN metropolitan statistical area.