Mill Valley, California

Mill Valley population, 2020 to 2024

Mill Valley lost 299 residents from July 2020 to July 2024, a change of -2.1%. In the latest year it moved by +53. Among 429 California places of 5,000 or more, that growth ranks 288th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Mill Valley is 38% of it.

Mill Valley covers 4.78 square miles of land and 0.08 of water, for 2,909 people per square mile of land. The median California place of 5,000+ has 3,725, so Mill Valley is less dense than the typical town.

What county Mill Valley is in

All of Mill Valley's residents live in Marin County, which had 256,400 residents in 2024. Mill Valley holds 5.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Mill Valley

1 ZIP Code Tabulation Area (ZCTA) overlaps Mill Valley by at least 10% of the ZCTA's or the city's land: 94941. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Mill Valley is

The Census internal point of Mill Valley is at 37.908100, -122.542300. Sacramento, the capital, is 73.3 miles NE in a straight line. The nearest larger place is San Rafael, CA (59,961 people), 5.4 miles away. The nearest city of 100,000 or more is Richmond, CA, 10.4 miles away.

Daylight in Mill Valley

At 37.91° N, Mill Valley 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 16 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Mill Valley

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Larkspur, 2.3 miles away, with 12,807 people.