Postal reference / United States

94547Hercules, California

ZIP code 94547 is a United States postal code for Hercules, California. Its county association is Contra Costa County. The map reference point is at 38.0066, -122.2637.

State / territory
California
Recorded place name
Hercules
County association
Contra Costa
Estimated coordinate
38.0066, -122.2637
View on OpenStreetMap
ZIP prefix
945 · 93 ZIP codes share it
Data source
GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area
5.67 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

Need the last four digits?

ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.

Find ZIP+4

Explore California

Browse the other 2,592 ZIP codes recorded for California, sorted by code with place and county.

California directory

Nearby ZIP code reference points

ZIP codePlaceStateCounty associationMiles
94564PinoleCAContra Costa1.5
94572RodeoCAContra Costa1.7
94820El SobranteCAContra Costa2.7
94803El SobranteCAContra Costa3.0
94525CrockettCAContra Costa4.0
94806San PabloCAContra Costa4.6
94569Port CostaCAContra Costa5.0
94805RichmondCAContra Costa5.6

Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.

Verify a mailing address

For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.

Open USPS address lookup