Belmont Flag

Belmont

County Seat:
No
Area (mi²):
4.63
State:
California

Belmont is a city located in San Mateo County, California. Belmont has a 2025 population of 27,132 . Belmont is currently growing at a rate of 0.76% annually but its population has decreased by -4.01% since the most recent census, which recorded a population of 28,265 in 2020.

The median household income in Belmont is $207,609 with a poverty rate of 6.46%. The median age in Belmont is 40.4 years: 40.6 years for males, and 40.2 years for females. For every 100 females there are 97.1 males.

27.1K
Total Population
5,861
Density (mi²)
205 0.76%
Growth

Belmont Population

Demographics

Economics and Income Statistics

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)