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Zip Code 94505 — Discovery Bay, CA

ZIP Code 94505 is associated with Discovery Bay, CA, in Contra Costa County. The listed population estimate is 14,970; estimated density is 346.7 people per square mile. Among records with population estimates, it ranks #30 of 43 in Contra Costa County and #903 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.866380, -121.586800)

Data MetricLocal Statistic
Postal / Zip Code94505
Primary CityDiscovery Bay
State / ProvinceCA
CountyContra Costa
Total Population14,970
Population Density346.7 people/sq mi
TimezoneAmerica/Los_Angeles

How 94505 Compares

MetricZIP 94505Contra Costa County recordsCA records
Population estimate14,9701,171,369 (sum)39,286,245 (sum)
Population Density346.7 /sq mi----
County population rank#30 of 43----
State population rank#903 of 1,762----

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

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Nearby ZIP Codes in CA

ZIP CodeCityDistancePopulation estimate
ZIP 94514Byron3.6 mi1,953
ZIP 95391Tracy6.7 mi25,574
ZIP 94513Brentwood6.7 mi69,755
ZIP 94548Knightsen8.3 mi832
ZIP 95206Stockton9.8 mi68,558

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 →