Marin County, CA ZIP codes
There are 42 ZIP codes in Marin County, CA, in 27 towns, from 94901 to 94998. The largest are 94901 (San Rafael), 94952 (Petaluma) and 94941 (Mill Valley).
The county seat is San Rafael.
- ZIP codes
- 42
- Towns
- 27
- County seat
- San Rafael
- County FIPS
06041- State
- California
- Population
- 257,969
- Median household income
- $149,091
- Land area
- 520 sq mi
- Metro area
- San Francisco-Oakland-Fremont
Marin County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Marin County ZIP codes
The ZIP codes of Marin County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Marin County in numbers
About 257,969 people live in Marin County, in 103,018 households, the 26th most populous of California's 58 counties. The median household income is $149,091 a year, 50% above the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $1,507,300 (2.1 times the California median), and median gross rent is $2,668 a month. The median age is 47.4; 61.1% of adults 25 and over hold a bachelor's degree or higher (37.1% across California); the average commute takes 27 minutes.
| Population | 257,969 |
|---|---|
| Households | 103,018 |
| Median age | 47.4 |
| Median household income | $149,091 |
| Median home value | $1,507,300 |
| Median gross rent | $2,668 |
| Bachelor's degree or higher | 61.1% |
| Mean commute | 27.4 min |
| Population density | 496 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Marin County
| Town | ZIP codes | Population |
|---|---|---|
| San Rafael | 5 | 60,433 |
| Petaluma | 1 | 59,247 |
| Novato | 5 | 52,546 |
| Mill Valley | 2 | 14,012 |
| Larkspur | 2 | 12,854 |
| Greenbrae | 1 | 12,815 |
| San Anselmo | 2 | 12,679 |
| Belvedere Tiburon | 1 | 12,609 |
| Corte Madera | 2 | 10,077 |
| Fairfax | 2 | 7,516 |
| Sausalito | 2 | 7,141 |
| Kentfield | 1 | 6,900 |
| Ross | 1 | 2,606 |
| San Quentin | 2 | 2,344 |
| Woodacre | 1 | 1,627 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Marin County.
Not sure you are in Marin County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Marin County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
94901 | San Rafael , CA | Standard | 41,307 | $115,330 | $1,512,600 |
94903 | San Rafael , CA | Standard | 30,615 | $142,083 | $1,197,300 |
94904 | Greenbrae , CA | Standard | 12,815 | $169,118 | $2,000,000+ |
94912 | San Rafael , CA | No street area | — | — | — |
94913 | San Rafael , CA | No street area | — | — | — |
94914 | Kentfield , CA | No street area | — | — | — |
94915 | San Rafael , CA | No street area | — | — | — |
94920 | Belvedere Tiburon , CA | Standard | 12,609 | $246,045 | $2,000,000+ |
94924 | Bolinas , CA | Standard | 1,372 | $101,458 | $2,000,000+ |
94925 | Corte Madera , CA | Standard | 10,077 | $232,763 | $1,755,200 |
94929 | Dillon Beach , CA | Standard | 293 | $209,536 | $1,660,000 |
94930 | Fairfax , CA | Standard | 8,406 | $145,362 | $1,170,000 |
94933 | Forest Knolls , CA | Standard | 1,033 | $133,006 | $862,100 |
94937 | Inverness , CA | Standard | 1,009 | $78,281 | $1,791,700 |
94938 | Lagunitas , CA | Standard | 437 | — | $1,149,700 |
94939 | Larkspur , CA | Standard | 7,315 | $203,988 | $2,000,000+ |
94940 | Marshall , CA | Standard | 148 | $47,021 | $2,000,000+ |
94941 | Mill Valley , CA | Standard | 32,706 | $209,870 | $2,000,000+ |
94942 | Mill Valley , CA | No street area | — | — | — |
94945 | Novato , CA | Standard | 17,635 | $107,790 | $1,124,100 |
94946 | Nicasio , CA | Standard | 715 | $154,688 | $2,000,000+ |
94947 | Novato , CA | Standard | 24,100 | $128,766 | $1,017,600 |
94948 | Novato , CA | No street area | — | — | — |
94949 | Novato , CA | Standard | 17,787 | $120,758 | $1,150,500 |
94950 | Olema , CA | Standard | 22 | — | — |
94952 | Petaluma , CA | Standard | 33,785 | $117,343 | $1,041,100 |
94956 | Point Reyes Station , CA | Standard | 1,080 | $82,205 | $1,681,300 |
94957 | Ross , CA | Standard | 2,321 | $250,000+ | $2,000,000+ |
94960 | San Anselmo , CA | Standard | 16,232 | $185,170 | $1,674,500 |
94963 | San Geronimo , CA | Standard | 739 | $210,823 | $1,156,300 |
94964 | San Quentin , CA | Standard | 2,344 | $115,192 | — |
94965 | Sausalito , CA | Standard | 11,724 | $146,946 | $1,537,800 |
94966 | Sausalito , CA | No street area | — | — | — |
94970 | Stinson Beach , CA | Standard | 255 | $132,857 | $1,493,400 |
94971 | Tomales , CA | Standard | 276 | $119,028 | $883,500 |
94973 | Woodacre , CA | Standard | 1,689 | $231,094 | $1,076,300 |
94974 | San Quentin , CA | No street area | — | — | — |
94976 | Corte Madera , CA | No street area | — | — | — |
94977 | Larkspur , CA | No street area | — | — | — |
94978 | Fairfax , CA | No street area | — | — | — |
94979 | San Anselmo , CA | No street area | — | — | — |
94998 | Novato , CA | No street area | — | — | — |
Cite this page
zipcodes.pro. “Marin County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ca/county/marin
Underlying data is public domain or openly licensed — sources, vintages and licences.