Population density (sq mi)52225691
Median age50.636.037.7
Male/Female ratio0.7:11.0:11.0:1
Married (15yrs & older)55%52%55%
Families w/ Kids under 1832%46%43%
Speak English87%56%79%
Speak Spanish4%29%13%

Key findings

  • The population density in Newcastle is 104% higher than California
  • The median age in Newcastle is 41% higher than California
  • In Newcastle 90.87% of the population is White
  • In Newcastle 0.16% of the population is Black
  • In Newcastle 2.40% of the population is Asian

Compare Newcastle, CA Demographics


      Newcastle population breakdown by race

      American Indian2.56%0.74%0.82%
      Native Hawaiian0.00%0.39%0.18%
      Mixed race3.04%4.62%3.06%
      Other race0.96%13.28%4.75%
      In Newcastle, 5.2% 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

      Newcastle age breakdown

      Marital status

      Age of children in married couples

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