Postal reference / United States
40020Fairfield, Kentucky
ZIP code 40020 is a United States postal code for Fairfield, Kentucky. Its county association is Nelson County. The map reference point is at 37.934, -85.3862.
- State / territory
- Kentucky
- Recorded place name
- Fairfield
- County association
- Nelson
- Estimated coordinate
- 37.934, -85.3862
View on OpenStreetMap - ZIP prefix
- 400 · 54 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 0.475 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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Browse the other 945 ZIP codes recorded for Kentucky, sorted by code with place and county.
Kentucky directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 40013 | Coxs Creek | KY | Nelson | 4.6 |
| 40008 | Bloomfield | KY | Nelson | 5.7 |
| 40048 | Nazareth | KY | Nelson | 7.5 |
| 40071 | Taylorsville | KY | Spencer | 7.8 |
| 40004 | Bardstown | KY | Nelson | 9.6 |
| 40012 | Chaplin | KY | Nelson | 10.3 |
| 40047 | Mount Washington | KY | Bullitt | 12.1 |
| 40046 | Mount Eden | KY | Spencer | 14.0 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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