St. John
Town in Lake County, Indiana

St. John is a town in Lake County, Indiana, with 20,303 residents (2020 Census). It sits at 725 ft (221 m) above sea level. The nearest town is Schererville, 3.2 miles N.
- 20,303residents (2020 Census)
- 725 ftelevation · 221 m
- 13.1 sq miland area · 34.0 km²
- 1,546 / sq mipopulation density
- 46373main ZIP code (2 in total)
About St. John
St. John or Saint John is a town in Lake County, Indiana, United States. St. John is located in St. John Township, Hanover Township, and Center Township. It is a southeastern suburb of Chicago. St. John was founded in 1837. The population was 20,303 at the 2020 census.
Text: Wikipedia · CC BY-SA 4.0
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Living in St. John
- Median household income
- $131,467
- Median home value
- $406,300
- Median rent
- $989/mo
- Median age
- 42.3
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Map of St. John
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Open in Google Maps ›St. John, IN population
St. John had 20,303 residents in the 2020 Census.
| 2020 Census | 20,303 |
|---|---|
| Density | 1,546 per sq mi (597 per km²) |
Source: U.S. Census Bureau, Decennial Census.
St. John at a glance
| State | Indiana (IN) |
|---|---|
| County | Lake County |
| Type | Town |
| Population | 20,303 (2020) |
| Land area | 13.13 sq mi (34.0 km²) |
| Water area | 0.09 sq mi (0.22 km²) |
| Elevation | 725 ft (221 m) |
| Coordinates | 41.4418° N, 87.4678° W |
| ZIP codes | 46373, 46311 |
| Official website | stjohnin.gov |
| Census code (GEOID) | 1866852 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near St. John
- Schererville3.2 mi N
- Willowbrook, IL3.3 mi W
- Plum Valley, IL4.2 mi W
- Dyer4.4 mi NW
- Cedar Lake5.0 mi S
- Sauk Village, IL6.3 mi NW
- Griffith6.4 mi N
- Crown Point6.7 mi E
- Eagle Lake, IL6.7 mi SW
- Lynwood, IL7.1 mi NW
- Highland7.3 mi N
- Munster7.5 mi N
Straight-line distance between town centers.
Frequently asked questions about St. John
What county is St. John in?
St. John is in Lake County, Indiana.
What is the population of St. John, IN?
20,303 people lived in St. John at the 2020 Census.
What is the ZIP code of St. John, IN?
The main ZIP code is 46373. Other ZIP codes: 46311.
What is the elevation of St. John?
725 feet (221 m) above sea level.
What towns are near St. John?
Schererville (3.2 mi), Willowbrook (3.3 mi), Plum Valley (4.2 mi), Dyer (4.4 mi), Cedar Lake (5.0 mi).
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