County ZIP codes · Ohio · FIPS 39017
Butler County, OH ZIP Codes
Butler County, Ohio has 24 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 18 residential and 6 for PO boxes or a single organization. 14 of the residential ones lie mainly in Butler County and 4 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $48,312 in 45015 (Hamilton) to $114,631 in 45069 (West Chester) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Butler County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $69,520 and $94,741.
They carry 14 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 18 residential ZIP codes in Butler County
14 ZIP codes lie mainly in Butler County; 4 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 45011 | Hamilton | 75,864 | 1,256 | $92k | $294k | 100% |
| 45044 | Middletown | 56,217 | 1,488 | $74k | $242k | 92% |
| 45069 | West Chester | 56,037 | 1,935 | $115k | $345k | 99% |
| 45013 | Hamilton | 53,998 | 459 | $74k | $232k | 97% |
| 45014 | Fairfield | 45,773 | 2,026 | $76k | $232k | 100% |
| 45042 | Middletown | 27,652 | 562 | $70k | $202k | 92% |
| 45056 | Oxford | 27,376 | 366 | $49k | $251k | 100% |
| 45067 | Trenton | 15,471 | 790 | $82k | $237k | 100% |
| 45050 | Monroe | 12,248 | 1,453 | $104k | $293k | 83% |
| 45015 | Hamilton | 11,038 | 1,960 | $48k | $121k | 100% |
| 45053 | Okeana | 3,718 | 137 | $109k | $342k | 100% |
| 45064 | Somerville | 3,373 | 105 | $103k | $240k | 52% |
| 45062 | Seven Mile | 511 | 646 | $53k | $142k | 100% |
| 45055 | Overpeck | 198 | 865 | – | – | 100% |
Partly in Butler County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
10 ZIP codes of Butler County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Butler | Elsewhere |
|---|---|---|
| 45044 | 92% | Warren County 8% |
| 45069 | 99% | |
| 45013 | 97% | Hamilton County 3% |
| 45042 | 92% | Preble County 7% |
| 45241 | 20% | Hamilton County 80% |
| 45246 | 23% | Hamilton County 77% |
| 45050 | 83% | Warren County 17% |
| 45327 | 2% | Montgomery County 94%; Preble County 4% |
| 45064 | 52% | Preble County 48% |
| 45003 | 19% | Preble County 81% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Butler County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Butler County's ZIP codes use 3 prefixes: 450, 452 and 453.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 450 | Cincinnati, OH (SCF 450) | 21 | 39 |
| 452 | Cincinnati, OH (SCF 450) | 2 | 70 |
| 453 | Dayton, OH (SCF 453) | 1 | 80 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.