ZIP code · Willis · Texas · United States
ZIP code 77378 — Willis
ZIP code 77378 serves Willis, Texas.
- Postal code
- 77378Single source Value from one source, not cross-checked.
- City
- Willis
- County
- Montgomery FIPS 48339
- State
- Texas
- Country
- United States
- Coordinates
- 30.4441, -95.4506 — precision precise (locality)
View on OpenStreetMap - Population
- 17,576 (ZCTA, ACS 5-year)
- Population density
- 197 / sq mi
- Land area
- 89.1 sq mi (230.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $68,595
- Per-capita income
- $33,162
- Median age
- 39.5
- Households
- 6,249
- Housing units
- 6,503
- Median home value
- $177,900
- Median gross rent
- $1,408 / month
- Congressional district
- 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 77378 with another ZIP · ZIPs within 25 miles · distance from 77378
Map of ZIP code 77378
Climate — monthly normals
Warmest month Aug (avg high 95°F), coldest Jan (avg low 39°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 62 | 66 | 73 | 79 | 86 | 91 | 94 | 95 | 90 | 82 | 71 | 64 |
| Avg low °F | 39 | 43 | 49 | 55 | 64 | 70 | 72 | 72 | 66 | 56 | 47 | 41 |
| Precip in | 4.3 | 2.9 | 3.0 | 3.1 | 4.8 | 4.4 | 3.1 | 3.9 | 3.6 | 5.5 | 5.1 | 3.9 |
NOAA 1991–2020 climate normals from the nearest station: CONROE MONTGOMERY CO AP (6.4 mi) · NOAA NCEI
Places in ZIP 77378
- 8 schools
- 1 pharmacies
- 2 supermarkets
- 8 restaurants & cafés
- 3 parks
- 3 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 5 places of worship
- 3 banks
- 8 gas 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