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CITY

Round Lake

Illinois · 18,526 residents (2025 est.) · 5.56 sq mi
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The short version

Round Lake is significantly wealthier than the US average, with a median household income of $111,977. The city has more than doubled in size since 2000, adding 12,786 residents. Median home value has more than doubled since 2000, reaching $278,600. It ranks in the top 5% of US cities for household income. Households here earn about 34% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $82,259
Younger
median age 36.1
US median: 38.9
More educated
42% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
18,628
+219%since 2000
from 5,842 in 2000
1990 – 2025
Population density
3,350 / sq mi
+219%since 2000
from 1,051 / sq mi in 2000
US average: 281
Median age
36.1
+19%since 2000
from 30.4 in 2000
US average: 38.9

PEP 2025 EST:18,526 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
2K7K11K16K20K1990201020202024Round Lake
202419K
1990201020202024
Section 02

Income & economy

Median household income
$111,977
+6%inflation adjusted, since 2000
from $58,051 in 2000
US average: $82,259
1990 – 2024
Per capita income
$42,490
+97%since 2000
from $21,585 in 2000
US average: $44,673
Households earning $100K+
68.0%
+22.0 ptssince 2009
from 46.0% in 2009
US average: 53.3%
Poverty rate
9.0%
+2.1 ptssince 2000
from 6.8% in 2000
US average: 12.5%
Income inequality (Gini)
0.386
+5%since 2010
from 0.367 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade20.6%
US avg: 9.9%
Other services11.1%
US avg: 6.7%
Information10.4%
US avg: 10.8%
Public administration8.8%
US avg: 4.8%
Wholesale trade5.6%
US avg: 6.9%
Finance & insurance4.4%
US avg: 5.9%
Transportation & warehousing4.3%
US avg: 2.2%
Professional, scientific, technical4.3%
US avg: 5.1%
Arts, entertainment, food1.5%
US avg: 1.9%
Agriculture, forestry, fishing0.6%
US avg: 1.6%
Construction0.6%
US avg: 1.2%
Education & health services0.1%
US avg: 0.9%
Manufacturing0%
US avg: 0.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$278,600
+11%inflation adjusted, since 2000
from $138,000 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,710
+63%inflation adjusted, since 2000
from $576 in 2000
US average: $1,442
Owner-occupied
77.2%
+0.8 ptssince 2000
from 76.5% in 2000
22.8% rent
Vacancy rate
3.0%
−2.2 ptssince 2009
from 5.2% in 2009
US average: 10.0%
Owner cost-burdened
23.6%
−23.0 ptssince 2009
from 46.7% in 2009
US average: 22.9%
Renter cost-burdened
53.9%
−0.6 ptssince 2009
from 54.5% in 2009
US average: 47.4%
Afford Score
2.5
+5%since 2000
from 2.4 in 2000
1990 – 2024
Gentrification Score
42
RELATED:See current rent listings in Round Lake on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic72.2%(4,217)
Black2%(116)
Hispanic / Latino22.1%(1,292)
Asian1.9%(112)
Other0%
Diversity Score51%(2,981)
2024
White, non-Hispanic44.5%(8,283)
Black3.7%(687)
Hispanic / Latino35.8%(6,677)
Asian12.1%(2,247)
Other3.9%(734)
Diversity Score82%(15,283)
Diversity Score
82
+61%since 2000
from 51 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
41.5%
+20.3 ptssince 2000
from 21.3% in 2000
US average: 35.6%
High school or higher
87.8%
+14.0 ptssince 2000
from 73.8% in 2000
US average: 89.6%
Graduate degree
10.0%
+5.4 ptssince 2000
from 4.6% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
31.3 min
+14%since 2000
from 27.6 min in 2000
US average: 26.5
Drive alone to work
68.1%
−16.5 ptssince 2009
from 84.6% in 2009
US average: 68.9%
Carpooled to work
11.2%
+3.9 ptssince 2009
from 7.3% in 2009
US average: 8.5%
Public transit
2.0%
−1.4 ptssince 2009
from 3.4% in 2009
US average: 3.2%
Worked from home
17.8%
+15.7 ptssince 2009
from 2.1% in 2009
US average: 15.0%
Walked to work
0.3%
−1.3 ptssince 2009
from 1.6% 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
1.6%
−0.5 ptssince 2009
from 2.1% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
6.1%
−1.5 ptssince 2011
from 7.6% in 2011
US average: 5.2%
Labor force participation
76.1%
−1.6 ptssince 2011
from 77.7% in 2011
US average: 63.5%
Self-employed
10.4%
+0.9 ptssince 2009
from 9.5% in 2009
US average: 13.1%
Management & professional
41.8%
−23.6 ptssince 2009
from 65.3% in 2009
US average: 42.5%
Section 08

People & community

Male
48.5%
−2.3 ptssince 2009
from 50.7% in 2009
Female
51.5%
+2.3 ptssince 2009
from 49.3% in 2009
Foreign born
24.6%
−1.4 ptssince 2009
from 26.0% in 2009
US average: 14.1%
Veterans
2.0%
−46.5 ptssince 2009
from 48.5% in 2009
US average: 6.2%
With a disability
10.0%
+4.4 ptssince 2012
from 5.6% in 2012
US average: 13.3%
Uninsured
4.2%
−83.6 ptssince 2013
from 87.8% in 2013
US average: 8.4%
Broadband at home
98.1%
+5.5 ptssince 2017
from 92.6% in 2017
US average: 91.0%
English only at home
57.7%
−10.5 ptssince 2016
from 68.3% in 2016
US average: 77.7%
Spanish at home
26.6%
+8.7 ptssince 2016
from 17.9% in 2016
US average: 13.6%
Drill deeper

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Head to head

Compare Round Lake to nearby cities

ROUND LAKE VS
Round Lake Beach
Income$86,059−23%
Home value$199,200−28%
Population26,902+45%
SEE FULL COMPARISON →
ROUND LAKE VS
Grayslake
Income$113,972+2%
Home value$309,500+11%
Population21,140+14%
SEE FULL COMPARISON →
ROUND LAKE VS
Wauconda
Income$111,239−1%
Home value$278,600same
Population13,993−24%
SEE FULL COMPARISON →
ROUND LAKE VS
Lake Villa
Income$118,750+6%
Home value$351,700+26%
Population8,692−53%
SEE FULL COMPARISON →
Frequently asked

How many people live in Round Lake, Illinois?

Round Lake, Illinois has about 18,628 residents according to the 2024 American Community Survey.

What is the median household income in Round Lake, Illinois?

The typical household in Round Lake, Illinois earns about $111,977 a year. Half of households make more than that, and half make less.

Is Round Lake, Illinois expensive?

In Round Lake, Illinois, the median home is worth about $278,600, and the typical rent is about $1,710 a month.

How educated are people in Round Lake, Illinois?

About 41.5% of adults age 25 and over in Round Lake, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Round Lake, Illinois?

About 9.0% of people in Round Lake, Illinois live below the federal poverty line.

Has Round Lake, Illinois grown since 1990?

Yes, Round Lake, Illinois has grown since 1990. The population has added about 15,079 residents, a change of about 425 percent over that period.

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

How we source and harmonize this data →