Zip Code 94511 — Bethel Island, CA

ZIP Code 94511 is associated with Bethel Island, CA, in Contra Costa County. The listed population estimate is 1,864; estimated density is 137.0 people per square mile. Among records with population estimates, it ranks #38 of 43 in Contra Costa County and #1302 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.028830, -121.640390)

Data MetricLocal Statistic
Postal / Zip Code94511
Primary CityBethel Island
State / ProvinceCA
CountyContra Costa
Total Population1,864
Population Density137.0 people/sq mi
TimezoneAmerica/Los_Angeles

How 94511 Compares

MetricZIP 94511Contra Costa County recordsCA records
Population estimate1,8641,171,369 (sum)39,286,245 (sum)
Population Density137.0 /sq mi----
County population rank#38 of 43----
State population rank#1302 of 1,762----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CA

ZIP CodeCityDistancePopulation estimate
ZIP 94561Oakley3.7 mi46,368
ZIP 94548Knightsen3.8 mi832
ZIP 95219Stockton6.8 mi31,713
ZIP 94513Brentwood7.5 mi69,755
ZIP 95641Isleton8.7 mi2,214

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →