Ontario, Indiana Demographics & Population 2026
During the 2020–2024 ACS period, Ontario, Indiana had a total population of 301, the 610th largest community in Indiana. The poverty rate is 0.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Only 5.4% of adults have a bachelor's degree, well below the national average of 35.7%.
Ontario Quick Facts
How Ontario 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 | 221 | 301 | +36.2% |
How Ontario 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+)
Ontario Rankings in Indiana
Explore Indiana Rankings
Cities Similar to Ontario
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Twelve Mile | 300 | $50,083 | N/A | 6.1% | 15.7% |
| Gentryville | 303 | $49,241 | $122,200 | 6.5% | 2.0% |
| Arthur | 299 | N/A | $110,800 | 20.9% | 42.5% |
| Harrodsburg | 298 | $35,417 | $182,800 | 25.4% | 6.0% |
| Coalmont | 297 | $110,074 | $137,500 | 8.4% | 0.0% |
A note before these figures: with a population of 301, Ontario's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Ontario is a small community located in Indiana. The total population is 301. It ranks as the 610th most populous out of 967 Census-designated places in Indiana.
Age Demographics
The median age in Ontario is 44.3 years. This is 16% higher than the state median of 38.1 years. With 29.9% of the population under 18, Ontario has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The ACS records no residents below the poverty line in Ontario. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Ontario, which reflects the size of the sample rather than a labor market without joblessness. 43.6% of occupied housing units are owner-occupied. This homeownership rate is 38% lower than the state average of 70.5%.
Race & Ethnicity
Every resident counted in Ontario was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.
Education
5.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 82% lower 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 35.1%.
Data Sources & Methodology
All demographic data for Ontario, 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.
Free data download: Get all Indiana city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Ontario, Indiana?
Ontario, Indiana has a population of 301 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Ontario, IN?
The Census Bureau does not publish a reliable median household income estimate for Ontario — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Ontario, IN?
The ACS sample for Ontario recorded no residents below the federal poverty line. Because the community is small, this indicates that the survey did not capture poverty here rather than that no poverty exists — the estimate carries a wide margin of error.
What is the racial makeup of Ontario, Indiana?
Ontario's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Ontario, IN?
The Census Bureau does not publish a reliable median home value estimate for Ontario — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Ontario, Indiana?
5.4% of adults (25+) in Ontario hold a bachelor's degree or higher, and 5.4% hold a graduate or professional degree.