Hillsdale, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Hillsdale, Illinois had a total population of 451, the 971st largest village in Illinois, with a median household income of $86,250, which is 3% higher than the state average. The poverty rate is 10.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 1.2x.
- Unemployment rate of 12.9% is notably above the national average.
Hillsdale Quick Facts
How Hillsdale 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 | 489 | 451 | -7.8% |
| Median household income | $84,583 | $86,250 | +2.0% |
| Median home value | $96,700 | $99,200 | +2.6% |
How Hillsdale 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+)
Hillsdale 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 Hillsdale
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Sigel | 439 | $85,625 | $165,800 | 19.9% | 8.3% |
| Rock Island Arsenal | 470 | N/A | N/A | 23.8% | 0.0% |
| Malden | 460 | $79,107 | $112,500 | 13.0% | 19.6% |
| Lakewood Shores | 459 | $78,693 | $217,100 | 11.4% | 3.7% |
| Grantfork | 459 | $95,625 | $167,900 | 47.3% | 13.3% |
A note before these figures: with a population of 451, Hillsdale'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
Hillsdale is a small community located in Illinois, within Rock Island County. The total population is 451. It ranks as the 971st most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Hillsdale is 45.4 years. This is 16% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Hillsdale is $86,250. This is 3% higher than the state median of $83,390. It is also 7% higher than the national median of $80,734. The poverty rate stands at 10.0%. This is 15% lower than the state poverty rate of 11.8%. The unemployment rate is 12.9%. This is 121% higher than the state rate of 5.8%. The median home value is $99,200. Housing costs are 62% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.2x, Hillsdale is one of the most affordable housing markets in the area. 86.1% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Hillsdale is White (non-Hispanic), making up 84.3% of the population. Hispanic or Latino residents account for 10.9%. The Black or African American population (0.4%) is well below the state average of 13.3%.
Education
12.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 67% 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 86.9%.
Data Sources & Methodology
All demographic data for Hillsdale, 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 Hillsdale, Illinois?
Hillsdale, Illinois has a population of 451 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Hillsdale, IL?
The median household income in Hillsdale is $86,250, which is 7% higher than the national median of $80,734.
What is the poverty rate in Hillsdale, IL?
The poverty rate in Hillsdale is 10.0%. This means approximately 45 residents live below the federal poverty line.
What is the racial makeup of Hillsdale, Illinois?
Hillsdale's population is 84.3% White, 0.4% Black, 10.9% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Hillsdale, IL?
The median home value in Hillsdale is $99,200. The home-value-to-income ratio is 1.2x.
How educated is Hillsdale, Illinois?
12.4% of adults (25+) in Hillsdale hold a bachelor's degree or higher, and 3.9% hold a graduate or professional degree.