Statistic St. Peter Illinois National
Population 438 12,671,821 328,239,523
Population density (sq mi) 841 228 91
Median age 32.2 37.4 37.7
Male/Female ratio 1.0:1 1.0:1 1.0:1
Married (15yrs & older) 74% 55% 55%
Families w/ Kids under 18 51% 44% 43%
Speak English 96% 77% 79%
Speak Spanish 0% 13% 13%
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Demographics Quick Facts

  • The population density in St. Peter is 269% higher than Illinois
  • The median age in St. Peter is 14% lower than Illinois
  • In St. Peter 96.58% of the population is White
  • In St. Peter 0.00% of the population is Black
  • In St. Peter 3.20% of the population is Asian

Compare St. Peter, IL Demographics

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      St. Peter racial demographics

      Race St. Peter Illinois National
      White 96.58% 72.14% 73.35%
      Black 0.00% 14.30% 12.63%
      Asian 3.20% 5.10% 5.22%
      American Indian 0.00% 0.23% 0.82%
      Native Hawaiian 0.00% 0.03% 0.18%
      Mixed race 0.23% 2.34% 3.06%
      Other race 0.00% 5.86% 4.75%
      In St. Peter, 0.0% 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

      St. Peter age breakdown

      Marital status

      Age of children in married couples

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