St. John, Indiana Demographics & Population 2026
During the 2020–2024 ACS period, St. John, Indiana had a total population of 22,567, the 45th largest town in Indiana, with a median household income of $131,467, which is 83% higher than the state average. The poverty rate is 2.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 83% above the state average — one of the wealthiest communities in Indiana.
- An exceptionally low poverty rate of 2.1% — among the lowest in Indiana.
- 43.7% of adults hold a bachelor's degree or higher — top 10% in Indiana.
- Near full employment with an unemployment rate of just 2.3%.
St. John Quick Facts
How St. John Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 21,639 | 22,567 | +4.3% |
| Median household income | $127,449 | $131,467 | +3.2% |
| Median home value | $370,800 | $406,300 | +9.6% |
How St. John Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
St. John Rankings in Indiana
Explore Indiana Rankings
Other Cities in Lake County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Hammond | 76,768 | $55,504 | 19.1% | $159,900 |
| Gary | 68,113 | $38,731 | 33.1% | $94,700 |
| Merrillville | 36,476 | $67,587 | 12.6% | $211,400 |
| Crown Point | 34,393 | $101,686 | 6.9% | $294,800 |
| Schererville | 29,701 | $89,466 | 7.7% | $314,900 |
| Hobart | 29,558 | $75,160 | 10.0% | $215,200 |
| East Chicago | 26,022 | $42,125 | 26.3% | $105,400 |
| Munster | 23,733 | $110,187 | 6.0% | $334,300 |
| Highland | 23,680 | $78,062 | 11.6% | $233,300 |
| Dyer | 16,400 | $107,159 | 6.2% | $322,200 |
Cities Similar to St. John
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Munster | 23,733 | $110,187 | $334,300 | 49.9% | 6.0% |
| Avon | 23,437 | $98,486 | $323,800 | 40.1% | 5.7% |
| Highland | 23,680 | $78,062 | $233,300 | 29.5% | 11.6% |
| Granger | 30,321 | $123,318 | $331,100 | 56.3% | 4.7% |
| Seymour | 22,371 | $64,426 | $162,800 | 18.1% | 15.5% |
Population Overview
St. John is a small city located in Indiana, within Lake County. The total population is 22,567. It ranks as the 45th most populous out of 967 Census-designated places in Indiana.
Age Demographics
The median age in St. John is 42.3 years. This is 11% higher than the state median of 38.1 years.
Economy, Income & Housing
The median household income in St. John is $131,467. This is 83% higher than the state median of $71,957. It is also 63% higher than the national median of $80,734. The poverty rate stands at 2.1%. This is 83% lower than the state poverty rate of 12.3%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.3%. This is 46% lower than the state rate of 4.3%. The median home value is $406,300. Housing costs are 86% higher than the state median of $218,200. The home-value-to-income ratio is 3.1x. 97.4% of occupied housing units are owner-occupied. This homeownership rate is 38% higher than the state average of 70.5%.
Race & Ethnicity
The largest racial or ethnic group in St. John is White (non-Hispanic), making up 78.7% of the population. Hispanic or Latino residents account for 13.6%. The Black or African American population (2.3%) is well below the state average of 9.1%. The Hispanic or Latino population is significantly higher than the state average (13.6% vs 8.6%).
Education
43.7% of residents aged 25 and older hold a bachelor's degree or higher. This places St. John in the top 10% of all cities in the state for educational attainment. This is 48% higher than the state rate of 29.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.3%.
Data Sources & Methodology
All demographic data for St. John, Indiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Indiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 967 Census-designated places in Indiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of St. John, Indiana?
St. John, Indiana has a population of 22,567 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. John, IN?
The median household income in St. John is $131,467, which is 63% higher than the national median of $80,734.
What is the poverty rate in St. John, IN?
The poverty rate in St. John is 2.1%. This means approximately 484 residents live below the federal poverty line.
What is the racial makeup of St. John, Indiana?
St. John's population is 78.7% White, 2.3% Black, 13.6% Hispanic/Latino, and 2.0% Asian.
What is the median home value in St. John, IN?
The median home value in St. John is $406,300. The home-value-to-income ratio is 3.1x.
How educated is St. John, Indiana?
43.7% of adults (25+) in St. John hold a bachelor's degree or higher, and 14.8% hold a graduate or professional degree.