San Mateo, CA vs Belmont, CA

Side-by-side comparison from the latest government data.

MetricSan Mateo, CABelmont, CA
Population103,10527,337
Median Household Income$153,504$205,297
Median Rent$3,077/mo$2,875/mo
Median Home Value$1,618,700$2,000,000+
Cost of Living (US = 100)116116
Renters Paying 30%+ of Income44.8%40.1%
Poverty Rate8.2%6.9%
Unemployment Rate3.8%4.3%
Violent Crime Rate /100k168138
Property Crime Rate /100k1,5021,296
Median AQI2727
Good AQI Days /yr281281
Summer Highs73°F80°F
Winter Lows45°F41°F
Snowfall0 in/yr0 in/yr
Avg Commute26.1 min28.5 min
Hospitals1—
Avg Hospital Rating——
Students per Teacher19.722.2
College Degree Rate57.8%69.7%
Foreign-Born %36.2%30.7%
Population Growth (2020–2025)-2.2%+1.5%

Green = clearly better (more than 5% apart). Population, growth, weather, hospital count and foreign-born share aren’t scored.
The Census tops out at $2,000,000+ for home value; it doesn't publish exact figures above that. Two capped values can't be compared, so neither is marked better.