Waterloo, IL
Population 11,055 · Illinois
About Waterloo, IL
Waterloo is a mid-sized city in Illinois with a population of 11,055 residents. The median household income is $92,005 per year, which is above the national average. The median age in Waterloo is 40.2 years.
Housing in Waterloo has a median home value of $237,900 and median monthly rent of $873. Of the 4,651 total housing units, the majority are owner-occupied, with 3,381 owner-occupied and 1,014 renter-occupied units.
The unemployment rate in Waterloo is 3.4% and the poverty rate is 5.5%. 36.4% of residents hold a bachelor's degree or higher. The average commute time is 26.9 minutes.
Cost of Living in Waterloo, IL
Compared to national averages, Waterloo has a median household income of $92,005 (22% above the national median of $75,149). Home values average $237,900, which is 3% below the national median. Monthly rent at $873 is 25% below the US average of $1,163. Within Illinois, Waterloo's income is 23% above the state average of $75,072, and home values are 44% above the state median of $165,779.
Why Live in Waterloo, IL?
Waterloo offers a strong local economy with a median household income of $92,005, well above the national average, and affordable housing with a median home value of $237,900, below the US average of $244,900, and rent that’s lower than the national average at $873/month. Additionally, the city features a strong job market with an unemployment rate of just 3.4%, and a well-educated community where 36.4% of residents hold a bachelor’s degree or higher, and a low poverty rate of 5.5%, better than the national average.
Waterloo has a population of 11,055 with a median age of 40.2 years. Compare Waterloo with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Waterloo
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Barrington | 11,049 | $150,714 | $580,900 | Compare |
| Columbia | 11,063 | $107,922 | $290,100 | Compare |
| Burr Ridge | 11,119 | $154,508 | $694,800 | Compare |
| Taylorville | 11,149 | $52,720 | $106,300 | Compare |
| Summit | 10,896 | $60,417 | $224,800 | Compare |
| Troy | 10,889 | $97,825 | $240,800 | Compare |
| Roscoe | 10,881 | $97,704 | $215,200 | Compare |
| Fox Lake | 10,872 | $69,896 | $219,300 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Waterloo
What is the population of Waterloo, IL?
The population of Waterloo, IL is 11,055 according to the latest Census data.
What is the median household income in Waterloo?
The median household income in Waterloo, IL is $92,005 per year.
What is the median home value in Waterloo?
The median home value in Waterloo, IL is $237,900.
What is the average rent in Waterloo?
The median monthly rent in Waterloo, IL is $873.
What is the unemployment rate in Waterloo?
The unemployment rate in Waterloo, IL is 3.4%.