Home > CA > Solano County > Fairfield > Zip 94534

Zip Code 94534 — Fairfield, CA

ZIP Code 94534 is associated with Fairfield, CA, in Solano County. The listed population estimate is 41,203; estimated density is 205.1 people per square mile. Among records with population estimates, it ranks #4 of 15 in Solano County and #366 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.241120, -122.121420)

Data MetricLocal Statistic
Postal / Zip Code94534
Primary CityFairfield
State / ProvinceCA
CountySolano
Total Population41,203
Population Density205.1 people/sq mi
TimezoneAmerica/Los_Angeles

How 94534 Compares

MetricZIP 94534Solano County recordsCA records
Population estimate41,203449,663 (sum)39,286,245 (sum)
Population Density205.1 /sq mi----
County population rank#4 of 15----
State population rank#366 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 94503American Canyon6.7 mi21,841
ZIP 94533Fairfield6.8 mi78,805
ZIP 94591Vallejo8.9 mi58,193
ZIP 94559Napa9.4 mi27,714
ZIP 94589Vallejo9.6 mi29,990

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 →