StatisticAlum RockCaliforniaNational
Population density (sq mi)13,99525691
Median age32.736.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)53%52%55%
Families w/ Kids under 1851%46%43%
Speak English35%56%79%
Speak Spanish51%29%13%

Key findings

  • The population density in Alum Rock is 5367% higher than California
  • The median age in Alum Rock is 9% lower than California
  • In Alum Rock 29.17% of the population is White
  • In Alum Rock 1.47% of the population is Black
  • In Alum Rock 13.72% of the population is Asian

Compare Alum Rock, CA Demographics


      Alum Rock population breakdown by race

      RaceAlum RockCaliforniaNational
      American Indian1.06%0.74%0.82%
      Native Hawaiian0.13%0.39%0.18%
      Mixed race6.78%4.62%3.06%
      Other race47.68%13.28%4.75%
      In Alum Rock, 72.4% 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

      Alum Rock age breakdown

      Marital status

      Age of children in married couples

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