Population density (sq mi)1,4335791
Median age36.638.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)60%60%55%
Families w/ Kids under 1846%44%43%
Speak English71%92%79%
Speak Spanish24%4%13%

Key findings

  • The population density in Marshalltown is 2415% higher than Iowa
  • The median age in Marshalltown is 4% lower than Iowa
  • In Marshalltown 77.53% of the population is White
  • In Marshalltown 1.66% of the population is Black
  • In Marshalltown 4.48% of the population is Asian

Compare Marshalltown, IA Demographics


      Marshalltown population breakdown by race

      American Indian0.34%0.32%0.82%
      Native Hawaiian0.05%0.08%0.18%
      Mixed race3.09%1.97%3.06%
      Other race12.85%1.27%4.75%
      In Marshalltown, 27.6% 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

      Marshalltown age breakdown

      Marital status

      Age of children in married couples

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