Fairfield, California Zip Codes
📍 Fairfield is in Solano County, California with 1 zip code; the most populous is 94533.
Fairfield is a USPS city name in Solano County, California with a Census population of approximately 78,129 across its ZIP codes. Solano County as a whole has 16 ZIP codes in this directory. Below you'll find every zip code serving Fairfield with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Fairfield Zip Codes
Fairfield at a Glance
Fairfield has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 78,129 residents, the largest being 94533 with 78,129 people.
The median ZIP in Fairfield has a household income of $84,907 and a home value of $462,500, a price-to-income ratio of 5.4, below the 6.7 California ZIP median. Median rent across these ZIPs is $1,827 a month.
55% of households in the typical Fairfield ZIP own their home (statewide ZIP median 64%). 21% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 11.7%, above the 10.8% statewide ZIP median. Overall density is about 3,472 residents per square mile across 23 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Fairfield Zip Code Map
Interactive map of Fairfield, California zip codes. Click any marker for details.