San Carlos, California

San Carlos population, 2020 to 2024

San Carlos lost 1,245 residents from July 2020 to July 2024, a change of -4.1%. In the latest year it moved by +221. Among 429 California places of 5,000 or more, that growth ranks 372nd; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so San Carlos is 79% of it.

San Carlos covers 5.41 square miles of land, for 5,435 people per square mile of land. The median California place of 5,000+ has 3,725, so San Carlos is denser than the typical town.

What county San Carlos is in

All of San Carlos's residents live in San Mateo County, which had 742,893 residents in 2024. San Carlos holds 4.0% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in San Carlos

1 ZIP Code Tabulation Area (ZCTA) overlaps San Carlos by at least 10% of the ZCTA's or the city's land: 94070. 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 San Carlos is

The Census internal point of San Carlos is at 37.499000, -122.267600. Sacramento, the capital, is 85.6 miles NNE in a straight line. The nearest larger place is Redwood City, CA (82,982 people), 3.2 miles away. The nearest city of 100,000 or more is San Mateo, CA, 4.8 miles away.

Daylight in San Carlos

At 37.50° N, San Carlos gets about 14 h 45 min of daylight around the June solstice and 9 h 34 min around the December solstice, a swing of 5 h 11 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near San Carlos

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Belmont, 1.8 miles away, with 27,132 people.