Population density (sq mi)2,1145791
Median age37.338.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)62%60%55%
Families w/ Kids under 1849%44%43%
Speak English97%92%79%
Speak Spanish1%4%13%

Key findings

  • The population density in Marion is 3610% higher than Iowa
  • The median age in Marion is 2% lower than Iowa
  • In Marion 93.46% of the population is White
  • In Marion 2.31% of the population is Black
  • In Marion 1.55% of the population is Asian

Compare Marion, IA Demographics


      Marion population breakdown by race

      American Indian0.06%0.32%0.82%
      Native Hawaiian0.00%0.08%0.18%
      Mixed race2.15%1.97%3.06%
      Other race0.48%1.27%4.75%
      In Marion, 1.8% 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

      Marion age breakdown

      Marital status

      Age of children in married couples

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