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St. John, IN
Town in Lake County, Indiana. ZIP codes: 46311, 46373.
Population
22,567
Land area
12.7sq mi
People per sq mi
1,771
ZIP codes
2
St. John and its ZIP codes
St. John at a glance
- St. John is about 9.3 times as dense as Indiana as a whole.
- By population, it ranks 45th among 967 cities and towns in Indiana.
- The median household income is $131,467, 83% above the Indiana median of $71,957.
- A typical owner-occupied home is valued at $406,300 (86% above Indiana) and median rent is $989 a month.
Local data for St. John, IN
Counts from official public data
Housing and community stats
St. John, IN, American Community Survey 2020-2024
Median household income
$131,467
Poverty rate
2.1%
Median home value
$406,300
Median rent
$989/mo
Homeownership
97.4%
Bachelor's or higher
43.7%
Median age
42.3
Average commute
31.2 min
Largest reported origins and ancestries: German Americans (4,724), Polish Americans (4,423), Irish Americans (2,809).
Economy and federal money
Jobs, pay, income and spending are for Lake County. PPP loans are for St. John.
Unemployment rate
4.8%
Aug 2026, -0.2 pts in a year
Average annual pay
$62,399
191,579 jobs, 2025
Income per person
$58,423
BEA, 2024
Federal spending
$3.3B
FY 2026, $6,604 per person
PPP loans
$36.9M
519 loans, 4,385 jobs reported
How people get to work
St. John, IN, workers 16 and older. American Community Survey 5-year estimates
- Drove alone80.3%
- Carpooled4.3%
- Public transit1.4%
- Walked0.8%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.8%
- Worked from home12.5%
Average one-way commute: 31.2 minutes for people who do not work from home.
Environment and hazard risk
St. John, IN, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: cold wave
Storm events since 1996
799
Countywide, mostly thunderstorm wind
Flood insurance policies
857
0.5% of homes, county
July high / Jan low
84° / 15°F
42.1 inches of rain a year
Hazards, floods and storm historyCheck a flood zone1 historic places
Health statistics
Share of adults in St. John, IN, CDC PLACES estimates
Obesity
33.8%
U.S. 33.3% +0.5 pts
Diabetes
11.2%
U.S. 12.1% -0.9 pts
Smoking
12.9%
U.S. 12.8% about the same
Uninsured (18-64)
5.9%
U.S. 11.1% -5.2 pts
ZIP codes in St. John
2 in or overlapping St. John. Population shown
Cities near St. John
| Name | Distance | Land area (sq mi) |
|---|---|---|
| ScherervilleTown | 3.5 mi | 15.1 |
| Willowbrook, ILCensus-designated place | 3.6 mi | 1.5 |
| DyerTown | 4 mi | 6.2 |
| Plum Valley, ILCensus-designated place | 4.2 mi | 1.9 |
| Cedar LakeTown | 5.5 mi | 9.5 |
| MerrillvilleTown | 6.3 mi | 33.2 |
| GriffithTown | 6.5 mi | 7.8 |
| Sauk Village, ILVillage | 6.5 mi | 4 |
| Eagle Lake, ILCensus-designated place | 6.6 mi | 0.6 |
| Crown PointCity | 7 mi | 19 |
| Lynwood, ILVillage | 7.1 mi | 5.1 |
| HighlandTown | 7.3 mi | 6.9 |
| Ford Heights, ILVillage | 7.4 mi | 2 |
| RossCensus-designated place | 7.7 mi | 5.7 |
| MunsterTown | 7.7 mi | 7.5 |
| Steger, ILVillage | 7.7 mi | 3.4 |
Frequently asked questions
- What county is St. John, IN in?
- St. John is in Lake County, Indiana.
- What ZIP codes are in St. John, IN?
- ZIP codes in or overlapping St. John include 46311, 46373.
- What is the population of St. John, IN?
- About 22,567 people live in St. John, based on American Community Survey 5-year estimates.
- What cities are near St. John?
- Nearby places include Schererville (3.5 mi), Willowbrook, IL (3.6 mi), Dyer (4 mi), Plum Valley, IL (4.2 mi), Cedar Lake (5.5 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023