Flat Rock, IL
Population 362 · Illinois
About Flat Rock, IL
Flat Rock is a small community in Illinois with a population of 362 residents. The median household income is $49,881 per year, which is below the national average. The median age in Flat Rock is 37.7 years.
Housing in Flat Rock has a median home value of $56,700 and median monthly rent of $0. Of the 169 total housing units, the majority are owner-occupied, with 129 owner-occupied and 19 renter-occupied units.
The unemployment rate in Flat Rock is 6.5% and the poverty rate is 14.4%. 13.4% of residents hold a bachelor's degree or higher. The average commute time is 27.6 minutes.
Cost of Living in Flat Rock, IL
Compared to national averages, Flat Rock has a median household income of $49,881 (34% below the national median of $75,149). Home values average $56,700, which is 77% below the national median. Monthly rent at $0 is 100% below the US average of $1,163. Within Illinois, Flat Rock's income is 34% below the state average of $75,072, and home values are 66% below the state median of $165,779.
Why Live in Flat Rock, IL?
Flat Rock offers affordable housing with a median home value of $56,700, below the US average of $244,900, and rent that’s lower than the national average at $0/month.
Potential considerations include median household income ($49,881) that falls below the national average. However, Flat Rock’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Flat Rock has a population of 362 with a median age of 37.7 years. Compare Flat Rock with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Flat Rock
Cities in Illinois with a similar population size.
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.
Compare Flat Rock With Other Cities
Frequently Asked Questions about Flat Rock
What is the population of Flat Rock, IL?
The population of Flat Rock, IL is 362 according to the latest Census data.
What is the median household income in Flat Rock?
The median household income in Flat Rock, IL is $49,881 per year.
What is the median home value in Flat Rock?
The median home value in Flat Rock, IL is $56,700.
What is the average rent in Flat Rock?
The median monthly rent in Flat Rock, IL is $0.
What is the unemployment rate in Flat Rock?
The unemployment rate in Flat Rock, IL is 6.5%.