Round Lake Beach, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Round Lake Beach, Illinois is 27,081 as of the 2023 American Community Survey, making it the 77th-largest city in Illinois. The median household income is $86,632, the median home value is $191,200, and the median age is 34.1.
The population has declined 3.6% since 2010 (28,111 → 27,091).
27,081
Population
5367
People / sq mi
$86,632
Median Income
$191,200
Median Home Value
Get Round Lake Beach's next ACS population data
Subscribe for Population Review updates by email. No spam, unsubscribe anytime.
Round Lake Beach covers 5.0 sq mi of land at 5367 people per square mile.
About Round Lake Beach, IL
Round Lake Beach is distinguished by its share of foreign-born residents, 10.0% of the population. Round Lake Beach is a city in Illinois with a population of 27,081.
Household earnings are middling, with a median of $86,632 — above the US median of $78,538. The poverty rate is 8.0%, below the national 12.4%. Housing is relatively affordable, with a median home value of $191,200, with typical rent around $1,382.
College attainment is 16.8%, below the national 35.0%. Most workers commute: only 6.8% work from home, below the national 14.0%, and the average commute runs about 31 minutes each way.
Round Lake Beach village Population History (2010-2024)
The city of Round Lake Beach village had a population of 28,111 in 2010 and 27,091 in 2024, a -3.6% growth over 14 years. The peak was 28,111 in 2010. Average annual growth rate: -0.26%.
27,091
Population (2024)
28,111
Population (2010)
28,111
Peak (2010)
-0.26%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 28,111 |
| 2011 | 28,049 |
| 2012 | 27,984 |
| 2013 | 28,001 |
| 2014 | 27,953 |
| 2015 | 27,803 |
| 2016 | 27,715 |
| 2017 | 27,560 |
| 2018 | 27,284 |
| 2019 | 27,100 |
| 2020 | 27,207 |
| 2021 | 27,109 |
| 2022 | 27,000 |
| 2023 | 26,995 |
| 2024 | 27,091 |
Race & Ethnicity
| White | 50.7% |
| Black or African American | 4.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.9% |
| Two or More Races | 0.0% |
Economy & Income
$86,632
Median Household Income
$33,146
Per Capita Income
8.0%
Poverty Rate
5.5%
Unemployment Rate
Housing
$191,200
Median Home Value
$1,382
Median Rent
79.0%
Owner-Occupied
Education
77.0%
High School+
16.8%
Bachelor's+
Commute
3.0%
Drive Alone
75.0%
Public Transit
6.8%
Work From Home
30.7 min
Avg Commute
Community Profile
10.0%
Foreign Born
48.9%
Non-English at Home
6.3%
Veterans
10.1%
With Disability
85.0%
Health Insurance
96.6%
Internet Access
Employment by Industry
| Manufacturing | 17.8% |
| Professional, Scientific & Management | 14.6% |
| Finance, Insurance & Real Estate | 13.6% |
| Education, Health Care & Social Services | 8.5% |
| Construction | 7.5% |
| Information | 6.2% |
| Retail Trade | 5.8% |
| Arts, Entertainment & Food Services | 5.3% |
| Public Administration | 2.2% |
| Transportation & Warehousing | 0.5% |
| Agriculture & Mining | 0.1% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Round Lake Beach, Illinois has a population of 27,081 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 77th-largest city in Illinois.
The median household income in Round Lake Beach, Illinois is $86,632, with 8.0% of residents living below the federal poverty level.
The median home value in Round Lake Beach, Illinois is $191,200, with median monthly rent at $1,382 and a homeownership rate of 79.0%.
The median age in Round Lake Beach, Illinois is 34.1 years. The population is 53.4% male and 46.6% female.
The population has declined 3.6% since 2010 (28,111 → 27,091).
Round Lake Beach village, IL Climate
Round Lake Beach village, IL has an average annual temperature of 8.5°C (47°F) and receives about 895 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
8.5°C
Avg Temp
895
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -7° / 20° | 42 mm |
| February | -4° / 25° | 32 mm |
| March | 2° / 35° | 64 mm |
| April | 8° / 46° | 91 mm |
| May | 14° / 57° | 86 mm |
| June | 19° / 67° | 97 mm |
| July | 22° / 72° | 101 mm |
| August | 21° / 70° | 104 mm |
| September | 17° / 63° | 96 mm |
| October | 11° / 51° | 61 mm |
| November | 3° / 38° | 66 mm |
| December | -3° / 26° | 55 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 Round Lake Beach village, IL
The most comfortable months to visit Round Lake Beach village, IL are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -11°C low). August is usually the wettest month.
Where to stay near Round Lake Beach
Visiting or relocating to Round Lake Beach, IL? Compare hotels and short-term rentals across the metro — live availability and prices.
Top-rated places to stay near Round Lake Beach
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 Round Lake Beach?
Get relocation and cost-of-living insights for Round Lake Beach, 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.