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 2026 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.

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

Nearby Cities

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)