ZIP Code 94511 – Bethel Island, CA
Bethel Island, California · Contra Costa County · Pacific time
| ZIP code | 94511 |
|---|---|
| City | Bethel Island |
| State | California |
| County | Contra Costa County |
| Population | 1,864 |
| Time zone | Pacific · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 5.25 sq mi |
| Center (lat, long) | 38.0281, -121.6299 |
Area codes in this area
These are the area codes that most often serve ZIP 94511 (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 94511
ZIP code 94511 is assigned to Bethel Island, California. It lies in Contra Costa County. Its Census area covers about 5.25 square miles of land. The closest neighboring ZIP is 94548 (Knightsen), about 3.9 miles away.
Every address in 94511 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