ZIP code · Fairfield · Texas · United States
ZIP code 75840 — Fairfield
ZIP code 75840 serves Fairfield, Texas.
- Postal code
- 75840Single source Value from one source, not cross-checked.
- City
- Fairfield
- County
- Freestone FIPS 48161
- State
- Texas
- Country
- United States
- Coordinates
- 31.7361, -96.1572 — precision precise (locality)
View on OpenStreetMap - Population
- 6,993 (ZCTA, ACS 5-year)
- Population density
- 26 / sq mi
- Land area
- 267.5 sq mi (692.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $56,670
- Per-capita income
- $32,460
- Median age
- 40.3
- Households
- 2,607
- Housing units
- 3,243
- Median home value
- $192,500
- Median gross rent
- $878 / month
- Congressional district
- TX-6 (119th Congress)
- USDA hardiness zone
- 8b (15 to 20 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 75840 with another ZIP · ZIPs within 25 miles · distance from 75840
Map of ZIP code 75840
Climate — monthly normals
Warmest month Aug (avg high 95°F), coldest Jan (avg low 36°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 58 | 61 | 69 | 76 | 82 | 89 | 94 | 95 | 88 | 79 | 68 | 60 |
| Avg low °F | 36 | 40 | 47 | 54 | 64 | 70 | 73 | 72 | 66 | 56 | 45 | 38 |
| Precip in | 3.6 | 3.5 | 3.8 | 3.3 | 4.7 | 4.5 | 1.8 | 2.9 | 3.2 | 4.2 | 3.9 | 4.1 |
NOAA 1991–2020 climate normals from the nearest station: FAIRFIELD 3W (3.0 mi) · NOAA NCEI
Places in ZIP 75840
- 6 schools
- 1 hospitals & clinics
- 2 supermarkets
- 20 restaurants & cafés
- 5 parks
- 16 places of worship
- 1 banks
- 14 gas stations
- 2 EV charging stations
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page