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Advertise here →Old Mill Creek, IL · Market Data
Old Mill Creek, Illinois real estate market data.
Real estate market data for Old Mill Creek, IL (Lake County) — Census median home value $525,000, county listing prices up about 2.6% over the past year.
Old Mill Creek, IL is in Lake County, Illinois — covering the whole local market here: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 131, with a median household income of $71,875. Census data puts Old Mill Creek's median home value at $525,000 (all owner-occupied homes); Lake County's current median listing price runs $487,500, up about 2.6% over the past year.
At a glance
Old Mill Creek market snapshot
Population
131
Median Household Income
$71,875
Median Home Value (city)
$525,000
Median Listing Price (Lake County)
$487,500
Median Gross Rent
$1,596/mo
Price Trend (YoY)
+2.6%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. Full source list ↗
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What makes Old Mill Creek different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Old Mill Creek's median home value — across all owner-occupied homes, not just recent sales — at $525,000. Separately, Lake County's current median listing price (via Realtor.com data, 2026-06-01) runs $487,500. These cover different geography (city vs. county) and different measures (assessed value vs. active listings), which is why we show both rather than picking one — full source list on our data sources page.
County Price Trend
Lake County's FHFA house price index shows a 6.73% annual change in 2025.
Population & Income
Old Mill Creek has an estimated population of 131 and a median household income of $71,875, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Old Mill Creek's Census-reported median home value works out to about 7.3x the area's median household income, and median gross rent runs roughly 27% of that same income on an annualized basis. Housing economists commonly flag a price-to-income ratio above 4x as historically elevated -- useful context, not a personal affordability verdict.
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Common questions
Old Mill Creek FAQ
What are home values like in Old Mill Creek, IL?
The Census Bureau's American Community Survey puts Old Mill Creek's median home value at $525,000. Lake County's current median listing price runs $487,500, up about 2.6% over the past year.
What is the population of Old Mill Creek, IL?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Old Mill Creek's population at approximately 131.
What's the median rent in Old Mill Creek, IL?
The Census ACS estimates median gross rent in Old Mill Creek at approximately $1,596 per month.
What is the median household income in Old Mill Creek, IL?
Census ACS data puts the median household income in Old Mill Creek at approximately $71,875.
Is the Old Mill Creek housing market growing?
Lake County's FHFA house price index shows a 6.73% annual change in 2025.
Is Old Mill Creek, IL affordable relative to income?
Census ACS data puts Old Mill Creek's median home value at about 7.3 times the median household income, with median gross rent equal to roughly 27% of that income annually. This is a general benchmark, not a personal pre-qualification -- your own income, debt, and down payment determine what you can actually afford.
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