Fairfield, KY ZIP code
The ZIP code for Fairfield, Kentucky is 40020. It is in Nelson County.
- Population in these ZIPs
- 199
- Avg. median income
- $90,700population-weighted
- Typical home value
- —population-weighted
- Metro area
- Louisville/Jefferson County, KY-IN
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Fairfield, KY ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 40020 | 199 | $90,712 | — |
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
- Coxs Creek 5 mi
- Bloomfield 6 mi
- Taylorsville 7 mi
- Bardstown 10 mi
- Mount Washington 12 mi
- Chaplin 12 mi
- Mount Eden 13 mi
- Clermont 14 mi
- Willisburg 15 mi
- Finchville 15 mi
- Fisherville 16 mi
- Lebanon Junction 16 mi
Frequently asked questions
What is the ZIP code for Fairfield, KY?
The ZIP code for Fairfield, KY is 40020.
What county is Fairfield, Kentucky in?
Fairfield ZIP codes are in Nelson County.