St. John Township, Lake County, Indiana

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St. John Township
Map highlighting St. John Township, Lake County, Indiana.svg
Coordinates: 41°28′36″N 87°27′45″W / 41.47667°N 87.46250°W / 41.47667; -87.46250Coordinates: 41°28′36″N 87°27′45″W / 41.47667°N 87.46250°W / 41.47667; -87.46250
CountryUnited States
 • TypeIndiana township
 • Total39.37 sq mi (102.0 km2)
 • Land39.2 sq mi (102 km2)
 • Water0.17 sq mi (0.4 km2)
Elevation679 ft (207 m)
 • Total66,741
 • Density1,702.6/sq mi (657.4/km2)
FIPS code18-66870[2]
GNIS feature ID453819

St. John Township is one of eleven townships in Lake County, Indiana. As of the 2010 census, its population was 66,741 and it contained 25,691 housing units.[3]


St. John Township was established in 1848. It was named for John Hack, the first German settler.[4]


According to the 2010 census, the township has a total area of 39.37 square miles (102.0 km2), of which 39.2 square miles (102 km2) (or 99.57%) is land and 0.17 square miles (0.44 km2) (or 0.43%) is water.[3]

The township includes the towns of Dyer, Schererville and St. John as well as the unincorporated areas of these towns.[5]

Zip codes in the township include 46307, 46311, 46319, 46373, and 46375. The State House districts are IN-11 and IN-15, and the State Senate districts are IN-1, IN-6, and a small portion of IN-2.[6]


The racial makeup of the township is 82.1% non-Hispanic White, 11.3% Hispanic, 2.73% African American, 2.23% Asian, 0.58% from other races, and 1.13% from two or more races. The percentages of Hispanic and African American residents are, respectively, 5.4 and 22.6 percent lower than Lake County as a whole.

Native-born citizens make up 91.9% of the population. Naturalized citizens are 5.3% of the population, while 1.9% are not citizens. The top ten countries of birth for foreign-born residents are Mexico, India, Croatia, Poland, Serbia, Greece, Macedonia, Philippines, Germany, and Bosnia and Herzegovina. The most common self-reported ancestries are: German (23.1%), Polish (17%), Irish (15.9%), Mexican (8.72%), Unclassified/Unreported (8.5%), Italian (8.1%), English (7.3%), Dutch (5.6%), American (4.7%), and Serbian (2.8%).[6]


  1. ^ "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
  2. ^ "U.S. Census website". United States Census Bureau. Retrieved 2008-01-31.
  3. ^ a b "Population, Housing Units, Area, and Density: 2010 - County -- County Subdivision and Place -- 2010 Census Summary File 1". United States Census. Archived from the original on 2020-02-12. Retrieved 2013-05-10.
  4. ^ Howat, William Frederick (1915). A Standard History of Lake County, Indiana, and the Calumet Region, Volume 1. Lewis Publishing Company. p. 105.
  5. ^ "St. John Township Trustee". St. John Township Trustee. Retrieved 2 May 2015.
  6. ^ a b "Overview of the St. John Township, Lake County, Indiana (Township) - Statistical Atlas". Retrieved 2017-02-02.

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