There are 15 zip codes in Solano County, California. The most populated is 94533, located in Fairfield. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9453378,129Fairfield
9568768,996Vacaville
9459159,026Vallejo
9453441,395Fairfield
9568840,147Vacaville
9459037,991Vallejo
9458929,959Vallejo
9458529,401Suisun City
9451027,223Benicia
9562022,004Dixon
9457110,514Rio Vista
945353,873Travis Afb
945921,020Vallejo
9562588Elmira
9451257Birds Landing
showing: 15 rows

Zip Codes in Solano County, California by Population (2024)