Statistic Grand Detour Illinois National
Population 351 12,671,821 328,239,523
Population density (sq mi) 300 228 91
Median age 46.6 37.4 37.7
Male/Female ratio 1.1:1 1.0:1 1.0:1
Married (15yrs & older) 62% 55% 55%
Families w/ Kids under 18 47% 44% 43%
Speak English 100% 77% 79%
Speak Spanish 0% 13% 13%
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Demographics Quick Facts

  • The population density in Grand Detour is 32% higher than Illinois
  • The median age in Grand Detour is 25% higher than Illinois
  • In Grand Detour 72.93% of the population is White
  • In Grand Detour 3.13% of the population is Black
  • In Grand Detour 0.00% of the population is Asian

Compare Grand Detour, IL Demographics

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      Grand Detour racial demographics

      Race Grand Detour Illinois National
      White 72.93% 72.14% 73.35%
      Black 3.13% 14.30% 12.63%
      Asian 0.00% 5.10% 5.22%
      American Indian 0.00% 0.23% 0.82%
      Native Hawaiian 0.00% 0.03% 0.18%
      Mixed race 23.93% 2.34% 3.06%
      Other race 0.00% 5.86% 4.75%
      In Grand Detour, 25.6% 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

      Grand Detour age breakdown

      Marital status

      Age of children in married couples

      Source: The Grand Detour, IL demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).