Hillsborough Flag

Hillsborough

County Seat:
No
Area (mi²):
6.166
State:
California

Hillsborough is a town located in San Mateo County, California. Hillsborough has a 2026 population of 11,171. Hillsborough is currently growing at a rate of 1.53% annually but its population has decreased by -1.66% since the most recent census, which recorded a population of 11,360 in 2020.

11.2K
Total Population
1,812
Density (mi²)
168 1.53%
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)