Fairfax, California

Fairfax population, 2020 to 2024

Fairfax lost 117 residents from July 2020 to July 2024, a change of -1.5%. In the latest year it moved by +27. Among 429 California places of 5,000 or more, that growth ranks 250th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Fairfax is 20% of it.

Fairfax covers 2.23 square miles of land, for 3,352 people per square mile of land. The median California place of 5,000+ has 3,725, so Fairfax is less dense than the typical town.

What county Fairfax is in

All of Fairfax's residents live in Marin County, which had 256,400 residents in 2024. Fairfax holds 2.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Fairfax

1 ZIP Code Tabulation Area (ZCTA) overlaps Fairfax by at least 10% of the ZCTA's or the town's land: 94930. 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 Fairfax is

The Census internal point of Fairfax is at 37.988500, -122.595200. Sacramento, the capital, is 72.3 miles NE in a straight line. The nearest larger place is San Anselmo, CA (12,645 people), 1.4 miles away. The nearest city of 100,000 or more is Richmond, CA, 13.0 miles away.

Daylight in Fairfax

At 37.99° N, Fairfax 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 Fairfax

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is San Anselmo, 1.4 miles away, with 12,645 people.