Statistic Allendale Illinois National
Population 655 12,671,821 328,239,523
Population density (sq mi) 2,134 228 91
Median age 33.1 37.4 37.7
Male/Female ratio 1.2:1 1.0:1 1.0:1
Married (15yrs & older) 60% 55% 55%
Families w/ Kids under 18 41% 44% 43%
Speak English 95% 77% 79%
Speak Spanish 4% 13% 13%
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Demographics Quick Facts

  • The population density in Allendale is 836% higher than Illinois
  • The median age in Allendale is 11% lower than Illinois
  • In Allendale 90.38% of the population is White
  • In Allendale 0.00% of the population is Black
  • In Allendale 3.21% of the population is Asian

Compare Allendale, IL Demographics

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      Allendale racial demographics

      Race Allendale Illinois National
      White 90.38% 72.14% 73.35%
      Black 0.00% 14.30% 12.63%
      Asian 3.21% 5.10% 5.22%
      American Indian 0.00% 0.23% 0.82%
      Native Hawaiian 0.00% 0.03% 0.18%
      Mixed race 5.95% 2.34% 3.06%
      Other race 0.46% 5.86% 4.75%
      In Allendale, 7.8% 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

      Allendale age breakdown

      Marital status

      Age of children in married couples

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