Population density (sq mi)1,6555791
Median age32.538.037.7
Male/Female ratio0.8:11.0:11.0:1
Married (15yrs & older)44%60%55%
Families w/ Kids under 1846%44%43%
Speak English93%92%79%
Speak Spanish2%4%13%

Key findings

  • The population density in Grinnell is 2804% higher than Iowa
  • The median age in Grinnell is 14% lower than Iowa
  • In Grinnell 90.78% of the population is White
  • In Grinnell 3.23% of the population is Black
  • In Grinnell 4.01% of the population is Asian

Compare Grinnell, IA Demographics


      Grinnell population breakdown by race

      American Indian0.16%0.32%0.82%
      Native Hawaiian0.05%0.08%0.18%
      Mixed race1.50%1.97%3.06%
      Other race0.26%1.27%4.75%
      In Grinnell, 4.0% 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

      Grinnell age breakdown

      Marital status

      Age of children in married couples

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