StatisticSan Luis ObispoCaliforniaNational
Population density (sq mi)3,55725691
Median age26.136.037.7
Male/Female ratio1.1:11.0:11.0:1
Married (15yrs & older)35%52%55%
Families w/ Kids under 1842%46%43%
Speak English83%56%79%
Speak Spanish12%29%13%

Key findings

  • The population density in San Luis Obispo is 1289% higher than California
  • The median age in San Luis Obispo is 28% lower than California
  • In San Luis Obispo 85.05% of the population is White
  • In San Luis Obispo 2.36% of the population is Black
  • In San Luis Obispo 5.27% of the population is Asian

Compare San Luis Obispo, CA Demographics


      San Luis Obispo population breakdown by race

      RaceSan Luis ObispoCaliforniaNational
      American Indian0.35%0.74%0.82%
      Native Hawaiian0.00%0.39%0.18%
      Mixed race3.42%4.62%3.06%
      Other race3.55%13.28%4.75%
      In San Luis Obispo, 16.7% 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

      San Luis Obispo age breakdown

      Marital status

      Age of children in married couples

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