Prospect Heights, IL
Population 15,681 · Illinois
About Prospect Heights, IL
Prospect Heights is a mid-sized city in Illinois with a population of 15,681 residents. The median household income is $91,599 per year, which is above the national average. The median age in Prospect Heights is 41 years.
Housing in Prospect Heights has a median home value of $347,500 and median monthly rent of $1,391. Of the 6,412 total housing units, the majority are owner-occupied, with 3,969 owner-occupied and 2,280 renter-occupied units.
The unemployment rate in Prospect Heights is 4.4% and the poverty rate is 5.9%. 36.3% of residents hold a bachelor's degree or higher. The average commute time is 26.4 minutes.
Cost of Living in Prospect Heights, IL
Compared to national averages, Prospect Heights has a median household income of $91,599 (22% above the national median of $75,149). Home values average $347,500, which is 42% above the national median. Monthly rent at $1,391 is 20% above the US average of $1,163. Within Illinois, Prospect Heights's income is 22% above the state average of $75,072, and home values are 110% above the state median of $165,779.
Why Live in Prospect Heights, IL?
Prospect Heights offers a strong local economy with a median household income of $91,599, well above the national average, and a well-educated community where 36.3% of residents hold a bachelor’s degree or higher, and a low poverty rate of 5.9%, better than the national average.
Prospect Heights has a population of 15,681 with a median age of 41 years. Compare Prospect Heights with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Prospect Heights
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Washington | 15,946 | $91,360 | $216,700 | Compare |
| La Grange | 15,999 | $154,556 | $582,600 | Compare |
| Bradley | 15,331 | $62,940 | $164,400 | Compare |
| Norridge | 15,177 | $87,579 | $361,000 | Compare |
| Dixon | 15,166 | $58,371 | $113,300 | Compare |
| Fairview Heights | 16,255 | $77,960 | $166,800 | Compare |
| Mattoon | 16,334 | $47,308 | $96,000 | Compare |
| Macomb | 15,006 | $39,753 | $99,800 | 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 Prospect Heights
What is the population of Prospect Heights, IL?
The population of Prospect Heights, IL is 15,681 according to the latest Census data.
What is the median household income in Prospect Heights?
The median household income in Prospect Heights, IL is $91,599 per year.
What is the median home value in Prospect Heights?
The median home value in Prospect Heights, IL is $347,500.
What is the average rent in Prospect Heights?
The median monthly rent in Prospect Heights, IL is $1,391.
What is the unemployment rate in Prospect Heights?
The unemployment rate in Prospect Heights, IL is 4.4%.