Illinois City, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Illinois City, Illinois had a total population of 73, the 1369th largest community in Illinois. 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
- Unemployment rate of 14.6% is notably above the national average.
Illinois City Quick Facts
How Illinois City 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 | 18 | 73 | +305.6% |
How Illinois City 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: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Illinois City Rankings in Illinois
Explore Illinois Rankings
Other Cities in Rock Island County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Moline | 42,197 | $67,701 | 15.5% | $146,300 |
| Rock Island | 36,151 | $59,041 | 21.0% | $125,900 |
| East Moline | 20,904 | $61,779 | 19.8% | $134,600 |
| Silvis | 7,955 | $62,375 | 15.4% | $161,600 |
| Milan | 5,034 | $62,597 | 12.3% | $119,300 |
| Coal Valley | 4,229 | $106,850 | 3.9% | $215,700 |
| Carbon Cliff | 2,151 | $55,536 | 19.1% | $134,600 |
| Hampton | 1,926 | $90,406 | 4.7% | $184,900 |
| Port Byron | 1,854 | $111,667 | 7.3% | $278,200 |
| Andalusia | 1,021 | $77,222 | 4.8% | $168,000 |
Cities Similar to Illinois City
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Union Hill | 73 | $112,500 | $158,300 | 39.1% | 2.8% |
| Osco | 74 | $72,778 | $109,600 | 0.0% | 13.5% |
| Belle Prairie City | 72 | $76,071 | $161,100 | 42.2% | 30.6% |
| Johnsonville | 72 | $55,313 | N/A | 2.1% | 48.6% |
| Sciota | 72 | $122,639 | $106,600 | 45.3% | 1.4% |
A note before these figures: with a population of 73, Illinois City'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
Illinois City is a small community located in Illinois, within Rock Island County. The total population is 73. It ranks as the 1369th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Illinois City is 25.5 years. This is 35% lower than the state median of 39.0 years.
Economy, Income & Housing
The ACS records no residents below the poverty line in Illinois City. 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 unemployment rate is 14.6%. This is 150% higher than the state rate of 5.8%. 53.1% of occupied housing units are owner-occupied. This homeownership rate is 21% lower than the state average of 67.1%.
Race & Ethnicity
Every resident counted in Illinois City 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
37.5% of residents aged 25 and older hold a bachelor's degree or higher. This is about the same as the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample. Notably, 20.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Illinois City, 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.
Free data download: Get all Illinois city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Illinois City, Illinois?
Illinois City, Illinois has a population of 73 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Illinois City, IL?
The Census Bureau does not publish a reliable median household income estimate for Illinois City — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Illinois City, IL?
The ACS sample for Illinois City 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 Illinois City, Illinois?
Illinois City's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Illinois City, IL?
The Census Bureau does not publish a reliable median home value estimate for Illinois City — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Illinois City, Illinois?
37.5% of adults (25+) in Illinois City hold a bachelor's degree or higher, and 20.0% hold a graduate or professional degree.