Onarga, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Onarga, Illinois had a total population of 1,430, the 597th largest village in Illinois, with a median household income of $78,352, which is 6% lower than the state average. The poverty rate is 8.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Only 8.9% of adults have a bachelor's degree, well below the national average of 35.7%.
- Housing is very affordable with a home-value-to-income ratio of just 1.3x.
Onarga Quick Facts
How Onarga 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 | 1,362 | 1,430 | +5.0% |
| Median household income | $64,286 | $78,352 | +21.9% |
| Median home value | $96,500 | $99,300 | +2.9% |
How Onarga 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
Moderate diversity with one or two groups making up the majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Onarga Rankings in Illinois
Explore Illinois Rankings
Other Cities in Iroquois County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Watseka | 4,780 | $43,608 | 23.4% | $103,700 |
| Gilman | 1,612 | $70,750 | 6.0% | $120,500 |
| Clifton | 1,385 | $92,344 | 11.9% | $205,400 |
| Sheldon | 1,195 | $44,280 | 19.2% | $78,000 |
| Milford | 1,052 | $46,827 | 26.8% | $74,600 |
| Ashkum | 918 | $78,365 | 5.2% | $150,600 |
| Cissna Park | 903 | $56,667 | 14.6% | $130,300 |
| Danforth | 611 | $54,625 | 26.7% | $151,200 |
| Crescent City | 456 | $58,333 | 3.5% | $116,500 |
| Buckley | 422 | $53,500 | 15.4% | $96,800 |
Cities Similar to Onarga
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Grant Park | 1,449 | $78,385 | $215,800 | 12.1% | 9.0% |
| Long Creek | 1,392 | $78,519 | $167,500 | 17.1% | 6.7% |
| Neoga | 1,421 | $73,355 | $123,100 | 25.5% | 11.8% |
| Warren | 1,396 | $75,813 | $102,200 | 12.9% | 9.9% |
| Mazon | 1,401 | $73,750 | $207,700 | 20.1% | 9.6% |
Population Overview
Onarga is a small community located in Illinois, within Iroquois County. The total population is 1,430. It ranks as the 597th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Onarga is 42.3 years. This is 8% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Onarga is $78,352. This is 6% lower than the state median of $83,390. It is also 3% lower than the national median of $80,734. The poverty rate stands at 8.6%. This is 27% lower than the state poverty rate of 11.8%. The unemployment rate is 3.8%. This is 36% lower than the state rate of 5.8%. The median home value is $99,300. Housing costs are 62% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.3x, Onarga is one of the most affordable housing markets in the area. 88.6% of occupied housing units are owner-occupied. This homeownership rate is 32% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Onarga is Hispanic or Latino, making up 60.3% of the population. White (non-Hispanic) residents account for 37.5%. The Black or African American population (1.3%) is well below the state average of 13.3%. The Hispanic or Latino population is significantly higher than the state average (60.3% vs 18.8%). The Asian population (0.2%) is well below the state average of 5.9%.
Education
8.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 76% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 61.6%.
Data Sources & Methodology
All demographic data for Onarga, Illinois 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 Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. 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 Onarga, Illinois?
Onarga, Illinois has a population of 1,430 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Onarga, IL?
The median household income in Onarga is $78,352, which is 3% lower than the national median of $80,734.
What is the poverty rate in Onarga, IL?
The poverty rate in Onarga is 8.6%. This means approximately 120 residents live below the federal poverty line.
What is the racial makeup of Onarga, Illinois?
Onarga's population is 37.5% White, 1.3% Black, 60.3% Hispanic/Latino, and 0.2% Asian.
What is the median home value in Onarga, IL?
The median home value in Onarga is $99,300. The home-value-to-income ratio is 1.3x.
How educated is Onarga, Illinois?
8.9% of adults (25+) in Onarga hold a bachelor's degree or higher, and 3.4% hold a graduate or professional degree.