Romeoville, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Romeoville, Illinois is 40,996 as of the 2023 American Community Survey, making it the 38th-largest city in Illinois. The median household income is $100,022, the median home value is $245,200, and the median age is 35.5.
The population has grown 3.7% since 2010 (39,704 → 41,177).
40,996
Population
2121
People / sq mi
$100,022
Median Income
$245,200
Median Home Value
Get Romeoville's next ACS population data
Subscribe for Population Review updates by email. No spam, unsubscribe anytime.
Romeoville covers 19.3 sq mi of land at 2121 people per square mile.
About Romeoville, IL
Romeoville is distinguished by its share of foreign-born residents, 9.2% of the population. With 40,996 residents, Romeoville is a city in Illinois. It ranks #38 among cities in Illinois by population.
Median household income is $100,022, above the US median of $78,538. Poverty is relatively low for US cities at 3.9%, below the national 12.4%. The typical home is valued at $245,200, with typical rent around $1,892.
College attainment is 23.1%, below the national 35.0%. Around 10.9% of workers work from home, below the national 14.0%, and the average commute runs about 32 minutes each way.
Romeoville village Population History (2010-2024)
The city of Romeoville village had a population of 39,704 in 2010 and 41,177 in 2024, a 3.7% growth over 14 years. The peak was 41,449 in 2021. Average annual growth rate: 0.26%.
41,177
Population (2024)
39,704
Population (2010)
41,449
Peak (2021)
0.26%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 39,704 |
| 2011 | 39,800 |
| 2012 | 39,851 |
| 2013 | 39,798 |
| 2014 | 39,793 |
| 2015 | 39,731 |
| 2016 | 39,724 |
| 2017 | 39,616 |
| 2018 | 39,576 |
| 2019 | 39,746 |
| 2020 | 40,809 |
| 2021 | 41,449 |
| 2022 | 41,124 |
| 2023 | 41,105 |
| 2024 | 41,177 |
Race & Ethnicity
| White | 51.6% |
| Black or African American | 12.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.9% |
| Two or More Races | 0.0% |
Economy & Income
$100,022
Median Household Income
$35,977
Per Capita Income
3.9%
Poverty Rate
3.5%
Unemployment Rate
Housing
$245,200
Median Home Value
$1,892
Median Rent
82.3%
Owner-Occupied
Education
83.3%
High School+
23.1%
Bachelor's+
Commute
2.0%
Drive Alone
72.8%
Public Transit
10.9%
Work From Home
31.6 min
Avg Commute
Community Profile
9.2%
Foreign Born
61.6%
Non-English at Home
4.5%
Veterans
10.5%
With Disability
92.2%
Health Insurance
96.4%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 19.9% |
| Manufacturing | 13.7% |
| Retail Trade | 11.1% |
| Finance, Insurance & Real Estate | 10.7% |
| Education, Health Care & Social Services | 7.1% |
| Information | 6.0% |
| Construction | 5.5% |
| Arts, Entertainment & Food Services | 4.6% |
| Public Administration | 2.1% |
| Transportation & Warehousing | 1.6% |
| Agriculture & Mining | 0.3% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Romeoville, Illinois has a population of 40,996 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 38th-largest city in Illinois.
The median household income in Romeoville, Illinois is $100,022, with 3.9% of residents living below the federal poverty level.
The median home value in Romeoville, Illinois is $245,200, with median monthly rent at $1,892 and a homeownership rate of 82.3%.
The median age in Romeoville, Illinois is 35.5 years. The population is 49.1% male and 50.9% female.
The population has grown 3.7% since 2010 (39,704 → 41,177).
Romeoville village, IL Climate
Romeoville village, IL has an average annual temperature of 9.9°C (50°F) and receives about 943 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.9°C
Avg Temp
943
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -6° / 22° | 39 mm |
| February | -3° / 27° | 37 mm |
| March | 3° / 38° | 68 mm |
| April | 10° / 49° | 98 mm |
| May | 16° / 60° | 98 mm |
| June | 21° / 70° | 105 mm |
| July | 24° / 74° | 99 mm |
| August | 22° / 72° | 99 mm |
| September | 18° / 65° | 94 mm |
| October | 12° / 53° | 68 mm |
| November | 4° / 40° | 76 mm |
| December | -2° / 28° | 62 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Romeoville village, IL
The most comfortable months to visit Romeoville village, IL are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -10°C low). June is usually the wettest month.
Where to stay near Romeoville
Visiting or relocating to Romeoville, IL? Compare hotels and short-term rentals across the metro — live availability and prices.
Top-rated places to stay near Romeoville
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Romeoville?
Get relocation and cost-of-living insights for Romeoville, IL by email. No spam, unsubscribe anytime.
More from Illinois
Population 2,707,648
Population 179,867
Population 149,785
Population 149,424
Population 147,649
Full rankings of Illinois cities by population
Statewide data for Illinois
Population, race, income, age, and trends across Illinois
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.