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
- State
- Texas
- Country
- United States
- Coordinates
- 30.4441, -95.4506 — precision precise (locality)
View on OpenStreetMap - Population
- 17,576 (ZCTA, ACS 5-year)
- Median household income
- $68,595
- Median age
- 39.5
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 · census-acs5. Data generated on 2026-08-21. Methodology · Report an error on this page