St. John Township, Lake County, Indiana

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.^[4]

Historical population

Census	Pop.	Note	%±
1890	1,686		—
1900	1,765		4.7%
1910	1,766		0.1%
1920	1,788		1.2%
1930	2,105		17.7%
1940	3,468		64.8%
1950	5,799		67.2%
1960	12,282		111.8%
1970	16,829		37.0%
1980	33,718		100.4%
1990	41,782		23.9%
2000	53,701		28.5%
2010	66,741		24.3%
2020	68,972		3.3%
Source: US Decennial Census[5]

St. John Township
Township
Coordinates: 41°28′36″N 87°27′45″W
Country	United States
State	Indiana
County	Lake
founded	1848
Government
• Type	Indiana township
Area
• Total	39.37 sq mi (102.0 km2)
• Land	39.2 sq mi (102 km2)
• Water	0.17 sq mi (0.4 km2)
Elevation [1]	679 ft (207 m)
Population  (2020)[2]
• Total	68,972
• Density	1,702.6/sq mi (657.4/km2)
FIPS code	18-66870[3]
GNIS feature ID	453819

History

St. John Township was established in 1848. It was named for John Hack, the first German settler.^[6]

Geography

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.^[4]

The township includes the towns of Dyer, Schererville and St. John as well as the unincorporated areas of these towns.^[7]

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.^[8]

Demographics

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%).^[8]