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Thursday, August 6, 2026

San Mateo vs South San Francisco

San Mateo, CA compared with South San Francisco, CA · 7 miles apart

San Mateo has 103,337 residents to South San Francisco’s 64,941. San Mateo comes out ahead on median household income, bachelor's degree +. South San Francisco does better on median rent, homeownership, average commute.

San Mateo, CA South San Francisco, CA
Population 103,337 64,941
Density (per sq mi) 8,528 7,056
Median household income $153,504 $136,578
Median home value $1,618,700 $1,188,800
Median rent $3,077 $2,802
Homeownership 49.9% 59%
Average commute 26.1 min 25.6 min
Median age 38.3 43.2
Bachelor's degree + 57.8% 40.8%
Poverty rate 8.2% 6.7%
Unemployment 4.6% 2.8%
Price to income 10.5× 8.7×

Highlighted where one city is clearly better on that measure. Population, density, home value and median age carry no highlight — a higher number there is good or bad depending on what you want.

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