San Mateo 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 Mateo199,884105,656-1.42%8,23212.1City
Daly City298,158104,858-1.68%12,8517.6City
Redwood City380,03283,887-1.19%4,13919.3City
South San Francisco462,19665,902-1.47%6,7579.2City
San Bruno540,52043,746-1.95%7,3825.5City
Pacifica635,73038,514-1.91%2,84012.6City
Foster City731,66233,733-1.61%8,3613.8City
Menlo Park831,02333,690-2.1%3,10510.0City
Burlingame929,45431,278-1.52%6,7054.4City
San Carlos1028,27030,638-2.05%5,2245.4City
East Palo Alto1127,63829,948-2.05%10,9332.5City
Belmont1226,07628,258-2.05%5,6324.6City
Millbrae1321,73623,138-1.59%6,6493.3City
North Fair Oaks1413,55614,992-0.59%11,3341.2CDP
Half Moon Bay1510,88311,771-2%1,7446.2City
Hillsborough1610,72311,363-1.47%1,7396.2Town
Atherton176,7077,171-1.7%1,3375.0Town
El Granada185,6826,0690.28%1,1574.9CDP
Woodside194,9525,291-1.69%43211.5Town
Brisbane204,4894,840-1.92%1,5043.0City
Broadmoor214,4604,1400.47%10,3240.4CDP
Emerald Lake Hills224,4504,8930.29%3,7651.2CDP
Portola Valley234,1234,447-1.93%4549.1Town
West Menlo Park243,3583,720-0.65%6,9240.5CDP
Highlands253,1852,9857.67%2,4501.3CDP
Moss Beach263,1753,4360.16%1,4192.2CDP
Montara272,6062,833-0.8%6723.9CDP
Baywood Park281,9681,7867.66%3,5980.5CDP
La Honda291,5041,2292.8%3534.3CDP
Ladera301,4271,3850%3,3190.4CDP
Colma311,3761,498-2.2%7281.9Town
Pescadero32300418-7.41%754.0CDP
Loma Mar331122820%651.7CDP

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 San Mateo County, California?

San Mateo is the largest city in San Mateo County.

What is the smallest city in San Mateo County, California?

Loma Mar is the smallest city in San Mateo County.

How many cities are in San Mateo County?

There are 33 cities in San Mateo County, California.

Frequently Asked Questions