Old Mill Creek, IL
Population 131 · Illinois
About Old Mill Creek, IL
Old Mill Creek is a small community located in Illinois with a population of 131 residents according to the latest US Census Bureau American Community Survey data. The median household income is $71,875 per year, which is 4% below the national median of $75,149. The median age of 42.9 years is notably older the US median age of 38.9 years, suggesting a more established community with a higher proportion of long-term residents.
Housing Market Overview
The housing market in Old Mill Creek features a median home value of $525,000, which is 114% above the national median of $244,900. This places Old Mill Creek in a higher-cost housing market, where property demand often outpaces supply. Median monthly rent is $1,596, 37% above the national average of $1,163/month. Of the 77 total housing units, 40% are owner-occupied (24 units) and 60% are renter-occupied (36 units). The higher proportion of renters may reflect a transient population, younger demographics, or high housing costs relative to income.
Economy & Employment
The local economy in Old Mill Creek shows an unemployment rate of 5.4%, which is near the national rate of 3.7%. The poverty rate stands at 6.1%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Old Mill Creek have an average one-way commute time of 22.4 minutes.
Education & Demographics
72.2% of Old Mill Creek residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This significantly higher educational attainment rate often correlates with access to knowledge-economy jobs and higher household incomes. The community's demographic composition includes 11.5% White, 2.3% Hispanic or Latino, 0.0% Black or African American, and 0.0% Asian residents, with 10.7% of the population being foreign-born.
How Old Mill Creek Ranks in Illinois
Cost of Living in Old Mill Creek, IL
Compared to national averages, Old Mill Creek has a median household income of $71,875 (4% below the national median of $75,149). Home values average $525,000, which is 114% above the national median. Monthly rent at $1,596 is 37% above the US average of $1,163. Within Illinois, Old Mill Creek's income is 4% below the state average of $75,072, and home values are 217% above the state median of $165,779.
Why Live in Old Mill Creek, IL?
Old Mill Creek offers a well-educated community where 72.2% of residents hold a bachelor’s degree or higher, and a low poverty rate of 6.1%, better than the national average, and short commute times averaging just 22.4 minutes.
Potential considerations include median household income ($71,875) that falls below the national average, and a competitive housing market where the typical home costs $525,000. However, Old Mill Creek’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Old Mill Creek has a population of 131 with a median age of 42.9 years. Compare Old Mill Creek with other cities to see how it stacks up, or explore all cities in Illinois.
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Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Old Mill Creek
What is the population of Old Mill Creek, IL?
The population of Old Mill Creek, IL is 131 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 Old Mill Creek?
The median household income in Old Mill Creek, IL is $71,875 per year, which is 4% below the national median of $75,149.
What is the median home value in Old Mill Creek?
The median home value in Old Mill Creek, IL is $525,000, which is 114% above the national median of $244,900. A significant portion of residents rent their homes.
What is the average rent in Old Mill Creek?
The median monthly rent in Old Mill Creek, IL is $1,596, which is 37% above the national average of $1,163/month.
What is the unemployment rate in Old Mill Creek?
The unemployment rate in Old Mill Creek, IL is 5.4%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is Old Mill Creek, IL a good place to live?
Old Mill Creek offers a moderate cost of living, a competitive housing market, and growing employment opportunities. With a population of 131 and a median age of 42.9, the city appeals to a broad range of residents.
How educated is Old Mill Creek, IL?
72.2% of residents in Old Mill Creek aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This above-average educational attainment often reflects a knowledge-based local economy.
What is the cost of living in Old Mill Creek?
Key cost-of-living indicators for Old Mill Creek, IL: median home value is $525,000 (114% above national), median rent is $1,596/month, and median household income is $71,875. The home-value-to-income ratio is 7.3x, which suggests housing may be stretched relative to local earnings.
What is the poverty rate in Old Mill Creek?
The poverty rate in Old Mill Creek, IL is 6.1%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Old Mill Creek, IL?
Old Mill Creek's population is 11.5% White, 2.3% Hispanic or Latino, 0.0% Black or African American, 0.0% Asian, and 0.0% two or more races. 10.7% of residents are foreign-born.