Postal reference / United States

94591Vallejo, California

ZIP code 94591 is a United States postal code for Vallejo, California. Its county association is Solano County. The map reference point is at 38.0985, -122.2124.

State / territory
California
Recorded place name
Vallejo
County association
Solano
Estimated coordinate
38.0985, -122.2124
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
21.097 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

Other ZIP codes in Vallejo, CA

Vallejo has 4 ZIP codes in the reference dataset.

Nearby ZIP code reference points

ZIP codePlaceStateCounty associationMiles
94590VallejoCASolano2.0
94592VallejoCASolano3.1
94525CrockettCAContra Costa3.2
94510BeniciaCASolano3.5
94569Port CostaCAContra Costa3.9
94503American CanyonCANapa5.3
94572RodeoCAContra Costa5.3
94589VallejoCASolano5.5

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