Marin County, located in the state of California, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to Marin County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
94979
94924
94963
94929
94964
94950
94912
94938
94978
94913
94901
94925
94930
94947
94965
94973
94948
94970
94949
94966
94933
94940
94952
94915
94942
94976
94974
94904
94939
94945
94960
94957
94977
94903
94920
94941
94956
94937
94971
94946
94914

To know more about Marin County, click the button below:

Marin County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in Marin County County?

There are approximately 41 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Marin County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.