City profile · Illinois · Census ACS 2023

Round Lake, IL

Population, income, housing, safety, climate and schools for Round Lake - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.

18,588
Residents
$108,965
Median income
$257,400
Median home
$1,781
Median rent (state)

Round Lake - the verdict

Round Lake ranks in the 83rd percentile for household income and the 77th percentile for safety nationally, out of every US city with at least 1,000 residents. Source: Census ACS + FBI UCR.

83rd
percentile, household income
57th
percentile, home value
72nd
percentile, median rent
77th
percentile, safety
📝 How we sourced this

Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.

Data Snapshot: Round Lake, IL

Round Lake is a small town in Illinois, home to 18,588 residents per U.S. Census Bureau ACS 2023 estimates. Round Lake households earn a median of $108,965 annually, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 6.0%. Round Lake's housing stock carries a median value of $257,400, and the median resident age is 36.7 years. 40.5% of adults here have a bachelor's degree or higher; 69.4% of working-age residents are in the labor force.

In 2024, 3 residential building permits were authorized in Round Lake (Low Activity), per Census BPS data. Round Lake reports a comparatively low crime rate: FBI UCR figures show 681.5 crimes per 100,000 residents, below the national average (reporting is voluntary across agencies, so treat this as reporting activity rather than a definitive danger score).

Illinois tracks close to the national cost-of-living baseline: BEA Regional Price Parities 2024 puts Illinois at 100.0 on a 100-equals-national-average scale (Near Average). Statewide, HUD pegs Fair Market Rent for a two-bedroom unit at $1,781 monthly. Statewide, average monthly utility bills in Illinois run around $240, per EIA 2023 residential energy data. FEMA's National Risk Index rates natural-hazard exposure at 96.0 out of 100 (Very High).

Population

18,588 residents

Census ACS 2023 - Illinois

Median Household Income

$108,965 /yr

Poverty 6.0%

Cost of Living Index (state)

100.0 (US=100)

Near Average - BEA RPP 2024, Illinois average

How does Round Lake compare to other US cities?

Here's how Round Lake stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.

Household income 83% higher than other cities
Home value 57% pricier than other cities
Median rent 72% pricier than other cities
Safety 77% safer than other cities

"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

National percentiles can mask local variation. Looking only at Illinois, Round Lake ranks #157 of 455 Illinois cities by lowest crime rate - a narrower, more locally useful cut than the national comparison above.

How we calculate these percentiles & ranks

Each percentile compares Round Lake against every qualifying US city; each in-state rank narrows that to Illinois only. Full formula and direction notes: methodology.

Illinois-relative analysis

Bachelor's Degree or Higher places Round Lake toward the top of Illinois's cities

Among the 1,336 Illinois cities PlainCities tracks with reported bachelor's degree or higher data, Round Lake ranks #180 - the 86th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Round Lake only against its own state's cities, not the full US field.

Median Household Income
#157 of 1,311
88th percentile in Illinois
Median Gross Rent
#17 of 1,336
77th percentile in Illinois
Median Home Value
#218 of 1,315
83rd percentile in Illinois
Poverty Rate
#763 of 1,335
42nd percentile in Illinois
Bachelor's Degree or Higher
#180 of 1,336
86th percentile in Illinois

Ranked by raw value (highest first); a higher rank is not automatically "better" for every measure, see each metric's own context above. This is a comparison within Illinois only, not a livability score. See the methodology for the source and calculation.

83rdIncome percentile
77thSafety percentile

83rd percentile nationally for median household income · 77th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.

Round Lake's profile vs. every US city

Income, affordability, and safety percentile

Round Lake's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown. 3-axis radar comparing 1 series across Income, Affordability, Safety. IncomeAffordabilitySafety 65 Avg. percentile National median
Round Lake's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown.

How Round Lake's home value compares nationally

Median home value vs. every US city (population 1,000+)

$257,400 43rd percentile more affordable than 43% of 15,600 US cities

$0–$25,000: 5 US cities (0%). Below this entry. $25,000–$50,000: 54 US cities (0%). Below this entry. $50,000–$75,000: 352 US cities (2%). Below this entry. $75,000–$100,000: 1,086 US cities (7%). Below this entry. $100,000–$125,000: 1,516 US cities (10%). Below this entry. $125,000–$150,000: 1,170 US cities (8%). Below this entry. $150,000–$175,000: 1,278 US cities (8%). Below this entry. $175,000–$200,000: 1,229 US cities (8%). Below this entry. $200,000–$225,000: 1,035 US cities (7%). Below this entry. $225,000–$250,000: 976 US cities (6%). Below this entry. $250,000–$275,000: 754 US cities (5%). This entry sits in this band. $275,000–$300,000: 712 US cities (5%). Above this entry. $300,000–$325,000: 521 US cities (3%). Above this entry. $325,000–$350,000: 526 US cities (3%). Above this entry. $350,000–$375,000: 465 US cities (3%). Above this entry. $375,000–$400,000: 393 US cities (3%). Above this entry. $400,000–$425,000: 317 US cities (2%). Above this entry. $425,000–$450,000: 300 US cities (2%). Above this entry. $450,000–$475,000: 307 US cities (2%). Above this entry. $475,000–$500,000: 250 US cities (2%). Above this entry. $500,000–$525,000: 160 US cities (1%). Above this entry. $525,000–$550,000: 156 US cities (1%). Above this entry. $550,000–$575,000: 172 US cities (1%). Above this entry. $575,000–$600,000: 172 US cities (1%). Above this entry. $600,000–$625,000: 163 US cities (1%). Above this entry. $625,000–$650,000: 167 US cities (1%). Above this entry. $650,000–$675,000: 135 US cities (1%). Above this entry. $675,000–$700,000: 101 US cities (1%). Above this entry. $700,000–$725,000: 95 US cities (1%). Above this entry. $725,000–$750,000: 71 US cities (0%). Above this entry. $750,000–$775,000: 65 US cities (0%). Above this entry. $775,000–$800,000: 70 US cities (0%). Above this entry. $800,000–$825,000: 57 US cities (0%). Above this entry. $825,000–$850,000: 67 US cities (0%). Above this entry. $850,000–$875,000: 60 US cities (0%). Above this entry. $875,000–$900,000: 58 US cities (0%). Above this entry. $900,000–$925,000: 47 US cities (0%). Above this entry. $925,000–$950,000: 37 US cities (0%). Above this entry. $950,000–$975,000: 31 US cities (0%). Above this entry. $975,000–$1,000,000: 470 US cities (3%). Above this entry. $1,000,000–$1,025,000: 0 US cities (0%). Above this entry. Round Lake $0 $1,025,000 every US city, bucketed by value

Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau ACS 5-Year Estimates · 2023

Income distribution context

Household income distribution - Round Lake, IL Round Lake, IL's reported median household income shown against the U.S. national quintile-share pattern (not Round Lake, IL-specific quintile data). The Lorenz curve traces the national cumulative income share against cumulative population share, perfect equality is the diagonal; observed inequality bows below. $ Household Income Distribution Round Lake, IL median $108,965/yr, vs. U.S. national quintile pattern QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
Round Lake, IL's median household income (Census ACS 5-year estimate) plotted against the U.S. national income-quintile distribution pattern for context; the quintile shares and Lorenz curve are national figures, not computed specifically for Round Lake, IL. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 40.5%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 6.0%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 69.4%

Census ACS S2301, share of working-age residents in the labor force

Population
18,588
Median Income
$108,965
Median Home Value
$257,400
Median Age
36.7
Poverty Rate
6.0%
Labor force participation
69.4%
Bachelor's Degree+
40.5%

Safety & Crime

Total Crime Rate
681.5
per 100,000 residents
Violent Crime
81.8
per 100,000 residents
Property Crime
599.7
per 100,000 residents

Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.

Schools

Total Schools
5
Public schools in this city

Population Change

Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025

See the fastest-growing cities →
18,500 residents18,550 residents18,600 residents18,650 residents18,700 residents18,750 residents 202020212022202320242025 18,689 residents 18,526 residents ▼ -0.9%
Round Lake's Census PEP population estimates, 2020–2025.

Housing Supply

Census Bureau Building Permits Survey (BPS) - annual residential permits authorized

🏗️ Low Activity
Total Permits (2024)
3
housing units authorized
Single-Family
3
detached homes
Multifamily
0
apartments & condos
Supply Intensity
0.2
permits per 1,000 residents

5-Year Permit Trend (2019–2024)

Year Total
2019 0
2020 0
2021 0
2022 0
2023 2
2024 3

Commute Patterns

How workers travel to work, Census ACS 2023

Drive Alone
70.2%
Carpool
12.0%
Public Transit
1.5%
Walk
0.3%
Work from Home
15.3%
Other
0.7%

Based on 9,767 workers 16 and over.

Monthly Utility Costs

State-average estimates for Illinois - EIA 2023 residential energy data

Electricity
$100
avg/month
Natural Gas
$90
avg/month
Water & Sewer
$50
avg/month
Total Utilities
$240
estimated/month

Estimates reflect Illinois state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

Cost of living is a Illinois state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Round Lake sits in

Cost of Living Index
100.0
Near Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$1,781/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
96.0 / 100
Very High
FEMA NRI composite score (county)

Similar Cities in Illinois

Bensenville
18,576 people
Alsip
18,650 people
Matteson
18,681 people
Ottawa
18,714 people
North Aurora
18,375 people
Bellwood
18,373 people

Cities of a Similar Size Nationwide

Population-matched peers from other states, closest to Round Lake's 18,588 residents (Census ACS 5-Year 2023).

Arcata, CA
18,578 people
Ocean Springs, MS
18,561 people
Coronado, CA
18,558 people
Preakness, NJ
18,538 people
Creve Coeur, MO
18,643 people
Westerly, RI
18,528 people

Cities with a Similar Household Income Nationwide

Median-household-income-matched peers from other states, closest to Round Lake's $108,965 (Census ACS 5-Year 2023, table B19013).

Lakeside Park, KY
$108,971 median income
Harmony, RI
$108,971 median income
Eureka, MO
$108,947 median income
Aquadale, NC
$108,984 median income
Charlotte Hall, MD
$108,936 median income
St. Pete Beach, FL
$108,931 median income

Race & Ethnicity Composition

Race and ethnicity - Round Lake, IL Race categories sum to one hundred percent per Census methodology. Hispanic or Latino is shown separately as an ethnicity overlay; it cuts across all race categories per OMB Directive 15. Race & Ethnicity Composition Round Lake, IL - Census ACS, OMB race + ethnicity categories RACE, sums to 100% 51.5% 14.6% 10.0% 19.1% ETHNICITY, Hispanic or Latino (any race) 32.1% White 51.5% Black or African American 3.1% Asian 14.6% American Indian 1.5% Native Hawaiian 0.2% Some other race 10.0% Two or more races 19.1% Per OMB Directive 15: Hispanic/Latino ethnicity is reported separately from the race categories.
Race categories sum to 100%. Hispanic or Latino ethnicity is reported separately and cuts across race per Census/OMB methodology.

City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.

How Round Lake compares to nearby Illinois cities

Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).

City Population Median Household Income
Round Lake (this city) 18,588 $108,965
Bensenville 18,576 $78,298
Alsip 18,650 $67,557
Matteson 18,681 $98,617
Census ACS 5-year FIPS IL FBI UCR NCES CCD Census BPS 2024 OMB Bulletin 23-01

What do people ask about Round Lake, IL?

What is the population of Round Lake, IL? +

Round Lake, IL counts 18,588 residents according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in Round Lake, IL? +

The median household income in Round Lake is $108,965 per year, based on Census ACS 2023 data.

What is the cost of living in Round Lake? +

BEA does not publish a city-level cost-of-living figure for Round Lake; the closest available measure is the Illinois state average, a cost of living index of 100.0 (U.S. average = 100), rated "Near Average" based on BEA Regional Price Parities 2024 data. Costs within Illinois vary by metro area.

Is Round Lake, IL safe? +

Round Lake has a total crime rate of 681.5 per 100,000 residents, which is below the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.

What is the median home value in Round Lake, IL? +

A typical home in Round Lake is worth $257,400, according to Census ACS 2023 estimates.

Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Read our methodology - how this data is sourced, computed, and verified.

Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.

Citation & verification links Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCities

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Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.