ZIP code · Huntsville · Texas · United States
ZIP code 77320 — Huntsville
ZIP code 77320 serves Huntsville, Texas.
- Postal code
- 77320Single source Value from one source, not cross-checked.
- City
- Huntsville
- County
- Walker FIPS 48471
- State
- Texas
- Country
- United States
- Coordinates
- 30.8470, -95.5970 — precision precise (locality)
View on OpenStreetMap - Population
- 37,458 (ZCTA, ACS 5-year)
- Population density
- 109 / sq mi
- Land area
- 343.6 sq mi (889.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $51,765
- Per-capita income
- $23,038
- Median age
- 40
- Households
- 10,004
- Housing units
- 12,135
- Median home value
- $174,400
- Median gross rent
- $975 / month
- Congressional districts
- TX-17 (also TX-8) (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °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)
- Area code
- 936Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 77320 with another ZIP · ZIPs within 25 miles · distance from 77320
Map of ZIP code 77320
Climate — monthly normals
Warmest month Aug (avg high 95°F), coldest Jan (avg low 41°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 61 | 65 | 72 | 79 | 86 | 92 | 94 | 95 | 90 | 81 | 70 | 62 |
| Avg low °F | 41 | 45 | 51 | 58 | 66 | 73 | 75 | 74 | 69 | 59 | 49 | 43 |
| Precip in | 3.6 | 2.9 | 3.4 | 3.2 | 4.0 | 4.6 | 2.8 | 3.2 | 3.2 | 4.4 | 4.3 | 4.1 |
NOAA 1991–2020 climate normals from the nearest station: HUNTSVILLE MUNI AP (7.1 mi) · NOAA NCEI
Places in ZIP 77320
- 8 schools
- 1 pharmacies
- 1 supermarkets
- 8 restaurants & cafés
- 11 parks
- 5 playgrounds
- 23 places of worship
- 2 banks
- 11 gas stations
- 1 EV charging stations
- 2 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