Marin County, California Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

33 cities

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
San Rafael159,02761,137-0.89%3,55916.6City
Novato251,24853,142-0.92%1,87227.4City
Mill Valley313,65514,201-0.99%2,8554.8City
Larkspur412,44213,029-1.17%4,1493.0City
Tamalpais-Homestead Valley512,44012,3310.99%2,6554.7CDP
San Anselmo612,39412,808-0.83%4,6332.7Town
Corte Madera79,85910,209-0.89%3,1203.2Town
Tiburon88,7489,138-1.11%1,9494.5Town
Kentfield97,5647,4231.03%2,4993.0CDP
Fairfax107,3607,586-0.77%3,3032.2Town
Sausalito116,9437,254-1.11%3,9361.8City
Lucas Valley-Marinwood126,3746,7380.32%1,1125.7CDP
Santa Venetia133,7003,891-1.15%1,0103.7CDP
Marin City143,5443,0401.78%6,6000.5CDP
Sleepy Hollow152,8442,3661.17%9593.0CDP
Ross162,2732,341-0.74%1,4591.6Town
Fairfax172,0721,7787.69%2,1761.0CDP
Belvedere182,0242,127-1.27%3,9000.5City
Black Point-Green Point191,7471,7381.81%6392.7CDP
Lagunitas-Forest Knolls201,7351,874-0.34%4094.2CDP
Inverness211,4961,4970.88%2346.4CDP
Woodacre221,3961,4640.29%7771.8CDP
Bolinas231,2231,223-2.32%2105.8CDP
Petaluma Center249901,0207.61%8441.2CDP
Alto25650818-0.76%5,1590.1CDP
Dillon Beach264683092.86%1573.0CDP
San Geronimo27424176-0.24%2811.5CDP
Muir Beach284233601.93%8580.5CDP
Stinson Beach29328583-6.02%3680.9CDP
Point Reyes Station30306210-11.05%853.6CDP
Tomales31174160-1.14%5240.3CDP
Bloomfield32172243-7.03%218.1CDP
Nicasio33971237.78%741.3CDP

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Marin County, California?

San Rafael is the largest city in Marin County.

What is the smallest city in Marin County, California?

Nicasio is the smallest city in Marin County.

How many cities are in Marin County?

There are 33 cities in Marin County, California.

Frequently Asked Questions