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CITY

Old Mill Creek

Illinois · 162 residents (2025 est.) · 10.664 sq mi
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The short version

Old Mill Creek is significantly wealthier than the US average, with a median household income of $108,333. Population has fallen 43% since 2000, a loss of 108 residents. 74% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value has risen by half since 2000, reaching $450,000. With a median age of 47.3, the population is older than the US median of 38.9. It sits in the top 10% of US cities for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 47.3
US median: 38.9
More educated
74% hold a bachelor's degree
US average: 36%
More affordable
home values down 11%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
143
−43%since 2000
from 251 in 2000
1990 – 2025
Population density
13 / sq mi
−43%since 2000
from 24 / sq mi in 2000
US average: 281
Median age
47.3
+26%since 2000
from 37.4 in 2000
US average: 38.9

PEP 2025 EST:162 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
501502513514521990201020202024Old Mill Creek
2024143
1990201020202024
Section 02

Income & economy

Median household income
$108,333
−28%inflation adjusted, since 2000
from $82,426 in 2000
US average: $82,259
1990 – 2024
Per capita income
$70,157
+62%since 2000
from $43,314 in 2000
US average: $44,673
Households earning $100K+
54.7%
−13.0 ptssince 2009
from 67.7% in 2009
US average: 53.3%
Poverty rate
4.9%
+2.2 ptssince 2000
from 2.7% in 2000
US average: 12.5%
Income inequality (Gini)
0.524
+13%since 2010
from 0.465 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing16.9%
US avg: 1.6%
Construction16.9%
US avg: 1.2%
Transportation & warehousing13.6%
US avg: 2.2%
Retail trade8.5%
US avg: 9.9%
Information8.5%
US avg: 10.8%
Other services8.5%
US avg: 6.7%
Wholesale trade5.1%
US avg: 6.9%
Public administration1.7%
US avg: 4.8%
Manufacturing0%
US avg: 0.4%
Finance & insurance0%
US avg: 5.9%
Professional, scientific, technical0%
US avg: 5.1%
Education & health services0%
US avg: 0.9%
Arts, entertainment, food0%
US avg: 1.9%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$450,000
−11%inflation adjusted, since 2000
from $278,800 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,688
−4%inflation adjusted, since 2000
from $967 in 2000
US average: $1,442
Owner-occupied
43.8%
−18.5 ptssince 2000
from 62.2% in 2000
56.3% rent
Vacancy rate
16.9%
+14.7 ptssince 2009
from 2.2% in 2009
US average: 10.0%
Owner cost-burdened
28.6%
−17.3 ptssince 2009
from 45.9% in 2009
US average: 22.9%
Renter cost-burdened
30.6%
+7.7 ptssince 2009
from 22.9% in 2009
US average: 47.4%
Afford Score
4.2
+23%since 2000
from 3.4 in 2000
1990 – 2024
Gentrification Score
50
RELATED:See current rent listings in Old Mill Creek on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic86.9%(218)
Black2.4%(6)
Hispanic / Latino2.4%(6)
Asian6.4%(16)
Other0%
Diversity Score26.2%(66)
2024
White, non-Hispanic82.5%(118)
Black0%(0)
Hispanic / Latino10.5%(15)
Asian0%(0)
Other7%(10)
Diversity Score37.9%(54)
Diversity Score
38
+45%since 2000
from 26 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
74.3%
+30.3 ptssince 2000
from 44.0% in 2000
US average: 35.6%
High school or higher
97.1%
+1.6 ptssince 2000
from 95.5% in 2000
US average: 89.6%
Graduate degree
33.3%
+18.3 ptssince 2000
from 15.0% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
23.4 min
−13%since 2000
from 26.8 min in 2000
US average: 26.5
Drive alone to work
66.1%
−18.9 ptssince 2009
from 85.0% in 2009
US average: 68.9%
Carpooled to work
4.8%
−3.2 ptssince 2009
from 8.0% in 2009
US average: 8.5%
Public transit
0.0%
−3.2 ptssince 2009
from 3.2% in 2009
US average: 3.2%
Worked from home
19.4%
+15.6 ptssince 2009
from 3.7% in 2009
US average: 15.0%
Walked to work
9.7%
+9.7 ptssince 2009
from 0.0% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
0.0%
−1.5 ptssince 2009
from 1.5% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
6.3%
−6.8 ptssince 2011
from 13.1% in 2011
US average: 5.2%
Labor force participation
56.4%
−5.4 ptssince 2011
from 61.8% in 2011
US average: 63.5%
Self-employed
11.9%
+2.6 ptssince 2009
from 9.3% in 2009
US average: 13.1%
Management & professional
39.0%
−24.4 ptssince 2009
from 63.4% in 2009
US average: 42.5%
Section 08

People & community

Male
50.3%
−5.6 ptssince 2009
from 56.0% in 2009
Female
49.7%
+5.6 ptssince 2009
from 44.0% in 2009
Foreign born
10.5%
−3.4 ptssince 2009
from 13.9% in 2009
US average: 14.1%
Veterans
2.7%
−51.4 ptssince 2009
from 54.1% in 2009
US average: 6.2%
With a disability
6.4%
−2.6 ptssince 2012
from 9.0% in 2012
US average: 13.3%
Uninsured
0.0%
−85.1 ptssince 2013
from 85.1% in 2013
US average: 8.4%
Broadband at home
75.0%
−4.7 ptssince 2017
from 79.7% in 2017
US average: 91.0%
English only at home
78.9%
−4.2 ptssince 2016
from 83.1% in 2016
US average: 77.7%
Spanish at home
12.8%
+9.8 ptssince 2016
from 3.0% in 2016
US average: 13.6%
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Compare Old Mill Creek to nearby cities

OLD MILL CREEK VS
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Income$131,474+21%
Home value$294,100−35%
Population14,810+9042%
SEE FULL COMPARISON →
OLD MILL CREEK VS
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Home value$344,300−23%
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OLD MILL CREEK VS
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Income$118,750+10%
Home value$351,700−22%
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OLD MILL CREEK VS
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Income$108,899+1%
Home value$306,700−32%
Population15,000+9159%
SEE FULL COMPARISON →
Frequently asked

How many people live in Old Mill Creek, Illinois?

Old Mill Creek, Illinois has about 143 residents according to the 2024 American Community Survey.

What is the median household income in Old Mill Creek, Illinois?

The typical household in Old Mill Creek, Illinois earns about $108,333 a year. Half of households make more than that, and half make less.

Is Old Mill Creek, Illinois expensive?

In Old Mill Creek, Illinois, the median home is worth about $450,000, and the typical rent is about $1,688 a month.

How educated are people in Old Mill Creek, Illinois?

About 74.3% of adults age 25 and over in Old Mill Creek, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Old Mill Creek, Illinois?

About 4.9% of people in Old Mill Creek, Illinois live below the federal poverty line.

Has Old Mill Creek, Illinois grown since 1990?

Yes, Old Mill Creek, Illinois has grown since 1990. The population has added about 60 residents, a change of about 72 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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