San Anselmo, California

San Anselmo population, 2020 to 2024

San Anselmo lost 170 residents from July 2020 to July 2024, a change of -1.3%. In the latest year it moved by +76. Among 429 California places of 5,000 or more, that growth ranks 235th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so San Anselmo is 34% of it.

San Anselmo covers 2.68 square miles of land, for 4,718 people per square mile of land. The median California place of 5,000+ has 3,725, so San Anselmo is denser than the typical town.

What county San Anselmo is in

All of San Anselmo's residents live in Marin County, which had 256,400 residents in 2024. San Anselmo holds 4.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in San Anselmo

1 ZIP Code Tabulation Area (ZCTA) overlaps San Anselmo by at least 10% of the ZCTA's or the town's land: 94960. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a town that annexed land after 2020 may reach into ZIP codes not listed here.

Where San Anselmo is

The Census internal point of San Anselmo is at 37.982100, -122.569900. Sacramento, the capital, is 71.4 miles NE in a straight line. The nearest larger place is San Rafael, CA (59,961 people), 3.4 miles away. The nearest city of 100,000 or more is Richmond, CA, 11.6 miles away.

Daylight in San Anselmo

At 37.98° N, San Anselmo gets about 14 h 48 min of daylight around the June solstice and 9 h 32 min around the December solstice, a swing of 5 h 17 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near San Anselmo

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Ross, 1.3 miles away, with 2,297 people.