There are 28 zip codes in Marin County, California. The most populated is 94901, located in San Rafael. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9490140,927San Rafael
9494132,190Mill Valley
9490331,582San Rafael
9494725,183Novato
9494918,545Novato
9494517,309Novato
9496016,028San Anselmo
9490413,132Greenbrae
9492012,906Belvedere Tiburon
9496512,044Sausalito
9492510,155Corte Madera
949308,748Fairfax
949397,488Larkspur
949572,081Ross
949642,054San Quentin
949731,438Woodacre
949241,342Bolinas
949331,284Forest Knolls
949561,189Point Reyes Station
94937938Inverness
94946673Nicasio
94963462San Geronimo
94929442Dillon Beach
94938428Lagunitas
94970400Stinson Beach
94971364Tomales
94940260Marshall
9495023Olema
showing: 28 rows

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