Fairfield, OH ZIP codes
Fairfield, Ohio has 2 ZIP codes, including 1 PO Box ZIP. They are in Butler County.
- Population in these ZIPs
- 45,773
- Avg. median income
- $75,700population-weighted
- Typical home value
- $284,000population-weighted
- Metro area
- Cincinnati, OH-KY-IN
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Fairfield, OH ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 45014 | Butler County | 45,773 | $75,661 | $284,000 |
| 45018 PO Box | Butler County | — | — | — |
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 near Fairfield
- Hamilton 2 mi
- Overpeck 6 mi
- Seven Mile 7 mi
- West Chester 9 mi
- Trenton 9 mi
- Monroe 11 mi
- Oxford 12 mi
- Okeana 12 mi
- Middletown 12 mi
- Somerville 13 mi
- Mason 14 mi
- Harrison 14 mi
Frequently asked questions
What county is Fairfield, Ohio in?
Fairfield ZIP codes are in Butler County.
Which Fairfield ZIP codes are PO Boxes?
45018 is a PO Box or single-organization ZIP code; it has no residential delivery area.