Fairfield, TX ZIP code
The ZIP code for Fairfield, Texas is 75840. It is in Freestone County.
- Population in these ZIPs
- 6,994
- Avg. median income
- $58,200population-weighted
- Typical home value
- $218,600population-weighted
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Fairfield, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 75840 | 6,994 | $58,224 | $218,600 |
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
Frequently asked questions
What is the ZIP code for Fairfield, TX?
The ZIP code for Fairfield, TX is 75840.
What county is Fairfield, Texas in?
Fairfield ZIP codes are in Freestone County.