Rock City, IL
Population 378 · Illinois
About Rock City, IL
Rock City is a small community located in Illinois with a population of 378 residents according to the latest US Census Bureau American Community Survey data. The median household income is $70,000 per year, which is 7% below the national median of $75,149. The median age of 32.2 years is notably younger the US median age of 38.9 years, indicating a younger, often more dynamic population base.
Housing Market Overview
The housing market in Rock City features a median home value of $124,000, which is 49% below the national median of $244,900. This makes Rock City one of the more affordable markets in the country, potentially attractive for first-time homebuyers. Median monthly rent is $845, 27% below the national average of $1,163/month. Of the 134 total housing units, 79% are owner-occupied (103 units) and 21% are renter-occupied (27 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Rock City shows an unemployment rate of 3.7%, which is near the national rate of 3.7%. The poverty rate stands at 4.5%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Rock City have an average one-way commute time of 30.4 minutes.
Education & Demographics
12.9% of Rock City residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The lower educational attainment rate may reflect the area's industry mix, with more employment in trades, manufacturing, or agricultural sectors. The community's demographic composition includes 22.0% White, 0.0% Hispanic or Latino, 0.0% Black or African American, and 0.8% Asian residents, with 2.1% of the population being foreign-born.
Cost of Living in Rock City, IL
Compared to national averages, Rock City has a median household income of $70,000 (7% below the national median of $75,149). Home values average $124,000, which is 49% below the national median. Monthly rent at $845 is 27% below the US average of $1,163. Within Illinois, Rock City's income is 7% below the state average of $75,072, and home values are 25% below the state median of $165,779.
Why Live in Rock City, IL?
Rock City offers affordable housing with a median home value of $124,000, below the US average of $244,900, and rent that’s lower than the national average at $845/month, and a low poverty rate of 4.5%, better than the national average.
Potential considerations include median household income ($70,000) that falls below the national average. However, Rock City’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Rock City has a population of 378 with a median age of 32.2 years. Compare Rock City with other cities to see how it stacks up, or explore all cities in Illinois.
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Cities in Illinois with a similar population size.
Demographics
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Economy & Education
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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 Rock City
What is the population of Rock City, IL?
The population of Rock City, IL is 378 according to the latest US Census Bureau American Community Survey estimates. This makes it a small community in Illinois.
What is the median household income in Rock City?
The median household income in Rock City, IL is $70,000 per year, which is 7% below the national median of $75,149.
What is the median home value in Rock City?
The median home value in Rock City, IL is $124,000, which is 49% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Rock City?
The median monthly rent in Rock City, IL is $845, which is 27% below the national average of $1,163/month.
What is the unemployment rate in Rock City?
The unemployment rate in Rock City, IL is 3.7%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is Rock City, IL a good place to live?
Rock City offers a moderate cost of living, affordable housing, and growing employment opportunities. With a population of 378 and a median age of 32.2, the city appeals to young professionals and families.
How educated is Rock City, IL?
12.9% of residents in Rock City aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The educational profile reflects the area's industry mix and employment landscape.
What is the cost of living in Rock City?
Key cost-of-living indicators for Rock City, IL: median home value is $124,000 (49% below national), median rent is $845/month, and median household income is $70,000. The home-value-to-income ratio is 1.8x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in Rock City?
The poverty rate in Rock City, IL is 4.5%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Rock City, IL?
Rock City's population is 22.0% White, 0.0% Hispanic or Latino, 0.0% Black or African American, 0.8% Asian, and 0.0% two or more races. 2.1% of residents are foreign-born.