Knoxville, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Knoxville, Illinois had a total population of 3,211, the 418th largest city in Illinois, with a median household income of $82,863, which is about the same as the state average. The poverty rate is 7.2%.
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 1.8x.
Knoxville Quick Facts
How Knoxville 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 | 3,137 | 3,211 | +2.4% |
| Median household income | $80,385 | $82,863 | +3.1% |
| Median home value | $139,900 | $145,300 | +3.9% |
How Knoxville 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+)
Knoxville Rankings in Illinois
Explore Illinois Rankings
Other Cities in Knox County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Galesburg | 29,481 | $48,297 | 19.1% | $96,400 |
| Abingdon | 3,443 | $61,653 | 9.2% | $99,600 |
| Oak Run | 800 | $100,417 | 3.3% | $298,300 |
| Oneida | 719 | $66,791 | 3.6% | $114,100 |
| East Galesburg | 713 | $79,333 | 17.5% | $123,700 |
| Wataga | 710 | $62,917 | 9.3% | $97,600 |
| Williamsfield | 531 | $82,417 | 4.0% | $109,800 |
| Yates City | 500 | $63,750 | 6.3% | $97,100 |
| Altona | 498 | $69,375 | 7.6% | $102,000 |
| London Mills | 328 | $53,125 | 23.5% | $64,400 |
Cities Similar to Knoxville
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Le Roy | 3,236 | $81,875 | $167,600 | 34.5% | 2.8% |
| Virden | 3,171 | $80,577 | $101,300 | 13.5% | 10.2% |
| East Dundee | 3,146 | $89,583 | $300,000 | 39.8% | 11.8% |
| New Baden | 3,463 | $81,393 | $172,200 | 29.1% | 7.4% |
| Riverton | 3,513 | $80,920 | $152,200 | 19.4% | 0.9% |
Population Overview
Knoxville is a small community located in Illinois, within Knox County. The total population is 3,211. It ranks as the 418th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Knoxville is 42.6 years. This is 9% higher than the state median of 39.0 years. 10.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Knoxville is $82,863. This is about the same as the state median of $83,390. It is also 3% higher than the national median of $80,734. The poverty rate stands at 7.2%. This is 39% lower than the state poverty rate of 11.8%. The unemployment rate is 5.8%. This is 1% lower than the state rate of 5.8%. The median home value is $145,300. Housing costs are 45% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.8x, Knoxville is one of the most affordable housing markets in the area. 84.1% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 67.1%.
Race & Ethnicity
Knoxville has a predominantly White (non-Hispanic) population, comprising 96.0% of all residents. Black or African American residents account for 0.5%. The White (non-Hispanic) population is significantly higher than the state average (96.0% vs 58.1%). The Black or African American population (0.5%) is well below the state average of 13.3%. The Hispanic or Latino population (0.3%) is well below the state average of 18.8%. The Asian population (0.1%) is well below the state average of 5.9%.
Education
24.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 34% 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 96.5%.
Data Sources & Methodology
All demographic data for Knoxville, 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 Knoxville, Illinois?
Knoxville, Illinois has a population of 3,211 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Knoxville, IL?
The median household income in Knoxville is $82,863, which is 3% higher than the national median of $80,734.
What is the poverty rate in Knoxville, IL?
The poverty rate in Knoxville is 7.2%. This means approximately 220 residents live below the federal poverty line.
What is the racial makeup of Knoxville, Illinois?
Knoxville's population is 96.0% White, 0.5% Black, 0.3% Hispanic/Latino, and 0.1% Asian.
What is the median home value in Knoxville, IL?
The median home value in Knoxville is $145,300. The home-value-to-income ratio is 1.8x.
How educated is Knoxville, Illinois?
24.8% of adults (25+) in Knoxville hold a bachelor's degree or higher, and 6.3% hold a graduate or professional degree.