Boulder Hill, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Boulder Hill, Illinois had a total population of 8,989, the 243rd largest community in Illinois, with a median household income of $80,377, which is 4% lower than the state average. The poverty rate is 8.8%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Unemployment rate of 10.4% is notably above the national average.
Boulder Hill Quick Facts
How Boulder Hill 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 | 9,127 | 8,989 | -1.5% |
| Median household income | $76,935 | $80,377 | +4.5% |
| Median home value | $233,100 | $238,700 | +2.4% |
How Boulder Hill 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 diverse community with significant representation from multiple racial and ethnic groups.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Boulder Hill Rankings in Illinois
Explore Illinois Rankings
Other Cities in Kendall County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Yorkville | 23,617 | $108,513 | 3.3% | $335,300 |
| Plano | 12,203 | $86,271 | 10.2% | $230,700 |
| Sandwich | 7,219 | $80,768 | 10.3% | $255,700 |
| Newark | 1,138 | $99,375 | 4.4% | $241,100 |
| Millington | 729 | $81,775 | 7.7% | $230,700 |
| Lisbon | 373 | $99,375 | 1.9% | $231,300 |
| Millbrook | 243 | $137,560 | 4.5% | $361,900 |
| Plattville | 225 | $113,750 | 0.0% | $309,100 |
Cities Similar to Boulder Hill
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Harwood Heights | 8,821 | $81,086 | $321,900 | 35.3% | 4.1% |
| Lynwood | 9,083 | $85,237 | $218,000 | 31.4% | 9.2% |
| Glenwood | 8,603 | $77,391 | $198,100 | 39.7% | 10.6% |
| Savoy | 8,968 | $91,966 | $320,300 | 63.3% | 7.9% |
| Manteno | 9,030 | $97,634 | $248,400 | 27.5% | 3.5% |
Population Overview
Boulder Hill is a small city located in Illinois, within Kendall County. The total population is 8,989. It ranks as the 243rd most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Boulder Hill is 37.6 years. This is 4% lower than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Boulder Hill is $80,377. This is 4% lower than the state median of $83,390. It is also about the same as the national median of $80,734. The poverty rate stands at 8.8%. This is 26% lower than the state poverty rate of 11.8%. The unemployment rate is 10.4%. This is 77% higher than the state rate of 5.8%. The median home value is $238,700. Housing costs are 9% lower than the state median of $263,300. The home-value-to-income ratio is 3.0x. 86.3% of occupied housing units are owner-occupied. This homeownership rate is 29% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Boulder Hill is White (non-Hispanic), making up 48.9% of the population. Hispanic or Latino residents account for 43.8%. The Black or African American population (2.2%) is well below the state average of 13.3%. The Hispanic or Latino population is significantly higher than the state average (43.8% vs 18.8%). The Asian population (1.7%) is well below the state average of 5.9%.
Education
19.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 49% 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 88.9%.
Data Sources & Methodology
All demographic data for Boulder Hill, 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 Boulder Hill, Illinois?
Boulder Hill, Illinois has a population of 8,989 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Boulder Hill, IL?
The median household income in Boulder Hill is $80,377, which is about the same as the national median of $80,734.
What is the poverty rate in Boulder Hill, IL?
The poverty rate in Boulder Hill is 8.8%. This means approximately 786 residents live below the federal poverty line.
What is the racial makeup of Boulder Hill, Illinois?
Boulder Hill's population is 48.9% White, 2.2% Black, 43.8% Hispanic/Latino, and 1.7% Asian.
What is the median home value in Boulder Hill, IL?
The median home value in Boulder Hill is $238,700. The home-value-to-income ratio is 3.0x.
How educated is Boulder Hill, Illinois?
19.2% of adults (25+) in Boulder Hill hold a bachelor's degree or higher, and 5.7% hold a graduate or professional degree.