ZIP Code 77470 – Rock Island, TX
Rock Island, Texas · Colorado County · Central time
| ZIP code | 77470 |
|---|---|
| City | Rock Island |
| State | Texas |
| County | Colorado County |
| Population | 414 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 28.54 sq mi |
| Center (lat, long) | 29.5338, -96.5327 |
Area codes in this area
These are the area codes that most often serve ZIP 77470 (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 77470
ZIP code 77470 is assigned to Rock Island, Texas. It lies in Colorado County. Its Census area covers about 28.54 square miles of land. The closest neighboring ZIP is 77412 (Altair), about 4.8 miles away.
Every address in 77470 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