StatisticCastro ValleyCaliforniaNational
Population density (sq mi)3,78725691
Median age41.636.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)62%52%55%
Families w/ Kids under 1846%46%43%
Speak English66%56%79%
Speak Spanish10%29%13%

Key findings

  • The population density in Castro Valley is 1379% higher than California
  • The median age in Castro Valley is 16% higher than California
  • In Castro Valley 56.33% of the population is White
  • In Castro Valley 6.47% of the population is Black
  • In Castro Valley 26.06% of the population is Asian

Compare Castro Valley, CA Demographics


      Castro Valley population breakdown by race

      RaceCastro ValleyCaliforniaNational
      American Indian0.48%0.74%0.82%
      Native Hawaiian0.92%0.39%0.18%
      Mixed race6.18%4.62%3.06%
      Other race3.56%13.28%4.75%
      In Castro Valley, 18.3% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Castro Valley age breakdown

      Marital status

      Age of children in married couples

      Source: The Castro Valley, CA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).