Population density (sq mi)1,4055791
Median age43.338.037.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)59%60%55%
Families w/ Kids under 1842%44%43%
Speak English92%92%79%
Speak Spanish6%4%13%

Key findings

  • The population density in Washington is 2365% higher than Iowa
  • The median age in Washington is 14% higher than Iowa
  • In Washington 92.85% of the population is White
  • In Washington 1.97% of the population is Black
  • In Washington 0.79% of the population is Asian

Compare Washington, IA Demographics


      Washington population breakdown by race

      American Indian0.62%0.32%0.82%
      Native Hawaiian0.15%0.08%0.18%
      Mixed race1.55%1.97%3.06%
      Other race2.08%1.27%4.75%
      In Washington, 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

      Washington age breakdown

      Marital status

      Age of children in married couples

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