Castro Valley Flag

Castro Valley

County:
Alameda County
County Seat:
No
Area (mi²):
16.848
State:
California

Castro Valley is a CDP located in Alameda County, California. Castro Valley has a 2025 population of 66,458. Castro Valley is currently growing at a rate of 0.51% annually and its population has increased by 3.21% since the most recent census, which recorded a population of 64,392 in 2020.

The average household income in Castro Valley is $168,687 with a poverty rate of 7.47%.The median age in Castro Valley is 42.8 years: 42.1 years for males, and 43.4 years for females.

66.5K
Total Population
3,944
Density (mi²)
338 0.51%
Growth

Castro Valley 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)