Algonquin, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Algonquin, Illinois had a total population of 30,067, the 65th largest village in Illinois, with a median household income of $134,525, which is 61% higher than the state average. The poverty rate is 4.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 61% above the state average — one of the wealthiest communities in Illinois.
- An exceptionally low poverty rate of 4.1% — among the lowest in Illinois.
Algonquin Quick Facts
How Algonquin 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 | 29,904 | 30,067 | +0.5% |
| Median household income | $131,753 | $134,525 | +2.1% |
| Median home value | $324,000 | $351,000 | +8.3% |
How Algonquin 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+)
Algonquin Rankings in Illinois
Explore Illinois Rankings
Other Cities in Kane County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Carpentersville | 37,346 | $86,917 | 10.3% | $234,100 |
| Huntley | 28,005 | $88,536 | 8.6% | $334,300 |
| South Elgin | 24,217 | $127,203 | 6.5% | $339,100 |
| Montgomery | 21,515 | $103,734 | 6.7% | $299,500 |
| Geneva | 21,258 | $144,341 | 3.8% | $441,400 |
| North Aurora | 18,696 | $114,305 | 6.3% | $342,100 |
| Pingree Grove | 10,914 | $114,294 | 1.2% | $320,800 |
| Campton Hills | 10,877 | $209,134 | 2.9% | $547,500 |
| Sugar Grove | 9,240 | $121,207 | 4.7% | $401,900 |
| Gilberts | 8,606 | $146,333 | 5.5% | $347,300 |
Cities Similar to Algonquin
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Gurnee | 30,510 | $119,628 | $344,300 | 56.7% | 5.2% |
| Glen Ellyn | 28,390 | $140,938 | $544,000 | 68.2% | 6.3% |
| New Lenox | 28,006 | $140,865 | $399,900 | 47.6% | 1.5% |
| Lake in the Hills | 28,800 | $117,151 | $321,900 | 35.8% | 4.1% |
| Highland Park | 30,398 | $168,094 | $607,300 | 76.9% | 4.2% |
Population Overview
Algonquin is a mid-sized community located in Illinois, within Kane County. The total population is 30,067. It ranks as the 65th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Algonquin is 41.4 years. This is 6% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Algonquin is $134,525. This is 61% higher than the state median of $83,390. It is also 67% higher than the national median of $80,734. The poverty rate stands at 4.1%. This is 65% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.1%. This is 29% lower than the state rate of 5.8%. The median home value is $351,000. Housing costs are 33% higher than the state median of $263,300. With a home-value-to-income ratio of just 2.6x, Algonquin is one of the most affordable housing markets in the area. 88.2% of occupied housing units are owner-occupied. This homeownership rate is 31% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Algonquin is White (non-Hispanic), making up 72.7% of the population. Hispanic or Latino residents account for 15.6%. The Black or African American population (2.8%) is well below the state average of 13.3%.
Education
43.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 15% higher 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 95.7%. Notably, 16.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Algonquin, 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 Algonquin, Illinois?
Algonquin, Illinois has a population of 30,067 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Algonquin, IL?
The median household income in Algonquin is $134,525, which is 67% higher than the national median of $80,734.
What is the poverty rate in Algonquin, IL?
The poverty rate in Algonquin is 4.1%. This means approximately 1,241 residents live below the federal poverty line.
What is the racial makeup of Algonquin, Illinois?
Algonquin's population is 72.7% White, 2.8% Black, 15.6% Hispanic/Latino, and 5.3% Asian.
What is the median home value in Algonquin, IL?
The median home value in Algonquin is $351,000. The home-value-to-income ratio is 2.6x.
How educated is Algonquin, Illinois?
43.6% of adults (25+) in Algonquin hold a bachelor's degree or higher, and 16.3% hold a graduate or professional degree.