ZIP Code 76831 – Castell, TX
Castell, Texas · Llano County · Central time
| ZIP code | 76831 |
|---|---|
| City | Castell |
| State | Texas |
| County | Llano County |
| Population | 0 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 8.21 sq mi |
| Center (lat, long) | 30.7576, -98.9578 |
Area codes in this area
These are the area codes that most often serve ZIP 76831 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 76831
ZIP code 76831 is assigned to Castell, Texas. It lies in Llano County. Its Census area covers about 8.21 square miles of land. The closest neighboring ZIP is 76820 (Art), about 5.3 miles away.
Every address in 76831 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources