StatisticMill ValleyCaliforniaNational
Population density (sq mi)3,00625691
Median age46.136.037.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)68%52%55%
Families w/ Kids under 1850%46%43%
Speak English86%56%79%
Speak Spanish4%29%13%

Key findings

  • The population density in Mill Valley is 1074% higher than California
  • The median age in Mill Valley is 28% higher than California
  • In Mill Valley 90.39% of the population is White
  • In Mill Valley 0.32% of the population is Black
  • In Mill Valley 3.67% of the population is Asian

Compare Mill Valley, CA Demographics


      Mill Valley population breakdown by race

      RaceMill ValleyCaliforniaNational
      American Indian0.25%0.74%0.82%
      Native Hawaiian0.00%0.39%0.18%
      Mixed race5.15%4.62%3.06%
      Other race0.22%13.28%4.75%
      In Mill Valley, 7.9% 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

      Mill Valley age breakdown

      Marital status

      Age of children in married couples

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