The Fairfield arch in the city's historic core

City facts

Fairfield zip codes

3 zip codes cover Fairfield: 94533, 94534, 94535.

Zip code map

Map of 3 places loads as you scroll.

Median household income by zip
Median home value by zip

Questions

What zip codes are in Fairfield?

94533, 94534, 94535. Some also cover parts of neighboring areas.

What is the most populated zip code in Fairfield?

94533, with about 78,537 residents.

Are zip codes the same as Census ZCTAs?

Almost. The Census Bureau’s ZIP Code Tabulation Areas approximate USPS zip codes so statistics can be published for them; PO box–only zips have no area and aren’t listed.

Source: U.S. Census Bureau 2020 ZIP Code Tabulation Areas, 2023 Gazetteer and ACS 2019–2023.

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