United States › Illinois › Carroll County COUNTY
Carroll County Illinois · 15,419 residents (2025 est.) · 445 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS
The short version
With 15,576 people, Carroll County is a county in Illinois. 18% of adults hold a bachelor's degree, below the 36% national rate. At a median age of 45.4, this is an older place than the country as a whole. Home values have risen by half since 2000, reaching $114,500. Owners hold 77% of the housing stock. 2% of residents were born outside the United States.
At a glance
Lower income
below the US median
US median: $82,259
Older
median age 45.4
US median: 38.9
Less educated
18% hold a bachelor's degree
US average: 36%
More affordable
home values down 12%, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 16,674 in 2000
15,419 in 2025 (Census Bureau estimate)
from 36 / sq mi in 2009
US average: 281
from 40.8 in 2000
US average: 38.9
Population, 1990 – 2024
14K 15K 16K 16K 17K 1990 2000 2010 2020 2024 Carroll County Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $60,758
−10%inflation adjusted, since 2000
from $37,148 in 2000
US average: $82,259
from $18,688 in 2000
US average: $44,673
Households earning $100K+
from 21.6% in 2009
US average: 53.3%
from 9.6% in 2000
US average: 12.5%
from 0.434 in 2010
US average: 0.476
Workforce by industry, 2024
Professional, scientific, technical 7%
Agriculture, forestry, fishing 4.4%
Public administration 4.2%
Transportation & warehousing 2.1%
Arts, entertainment, food 2%
Education & health services 0.8%
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$114,500
−12%inflation adjusted, since 2000
from $71,100 in 2000
US average: $376,019
$818
+17%inflation adjusted, since 2000
from $385 in 2000
US average: $1,442
from 76.7% in 2000
22.8% rent
from 16.0% in 2009
US average: 10.0%
from 2.22 people in 2009
US average: 2.54
from 22.2% in 2009
US average: 22.9%
from 30.6% in 2009
US average: 47.4%
from 2.2 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 95.9%(15,988)
2024
White, non-Hispanic 87.8%(13,674)
Hispanic / Latino 5.3%(820)
from 12 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
from 18 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 23 more ancestry groups with data from 13.1% in 2000
US average: 35.6%
High school or higher
from 83.3% in 2000
US average: 89.6%
from 3.7% in 2000
US average: 14.0%
Section 06
Commute & transportation from 16.7 min in 2000
US average: 26.5
from 78.2% in 2009
US average: 68.9%
from 11.0% in 2009
US average: 8.5%
from 0.6% in 2009
US average: 3.2%
from 5.9% in 2009
US average: 15.0%
from 3.2% in 2009
US average: 2.4%
from 0.4% in 2009
US average: 0.4%
from 4.9% in 2009
US average: 8.3%
Section 07
Work & employment from 8.5% in 2011
US average: 5.2%
from 62.8% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 74.6% in 2020
US average: 74.6%
from 12.6% in 2009
US average: 13.1%
from 30.0% in 2009
US average: 42.5%
Section 08
People & community from 1.8% in 2009
US average: 14.1%
from 13.4% in 2009
US average: 6.2%
from 14.0% in 2012
US average: 13.3%
from 11.9% in 2013
US average: 8.4%
from 74.0% in 2017
US average: 91.0%
Computer in household
from 88.0% in 2020
US average: 95.5%
from 90.9% in 2020
US average: 87.7%
from 96.4% in 2016
US average: 77.7%
from 2.1% in 2016
US average: 13.6%
Marital status
Men 15+
Never married 38.4%(2,835)
Women 15+
Never married 20.1%(1,196)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 11.9% in 2013
US average: 8.4%
from 53.7% in 2020
US average: 54.8%
Direct-purchase
from 20.9% in 2020
US average: 13.8%
from 27.3% in 2020
US average: 18.4%
from 16.5% in 2020
US average: 20.9%
VA health care
from 3.9% in 2020
US average: 2.2%
Any private
from 71.1% in 2020
US average: 67.1%
Any public
from 41.8% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 15.7%(174)
Gulf War (1990s) 13.1%(145)
Share of the 1,105 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Carroll County Head to head
Compare Carroll County to nearby counties CARROLL COUNTY VS
Whiteside County
Income $67,500 +11%
Home value $127,100 +11%
Population 54,121 +251%
SEE FULL COMPARISON →
CARROLL COUNTY VS
Stephenson County
Income $64,043 +5%
Home value $134,900 +18%
Population 43,220 +180%
SEE FULL COMPARISON →
CARROLL COUNTY VS
Jo Daviess County
Income $73,993 +22%
Home value $209,900 +83%
Population 21,594 +40%
SEE FULL COMPARISON →
CARROLL COUNTY VS
Ogle County
Income $82,132 +35%
Home value $189,200 +65%
Population 51,399 +233%
SEE FULL COMPARISON →
Frequently asked
How many people live in Carroll County, Illinois? Carroll County, Illinois has about 15,576 residents according to the 2024 American Community Survey.
What is the median household income in Carroll County, Illinois? The typical household in Carroll County, Illinois earns about $60,758 a year. Half of households make more than that, and half make less.
Is Carroll County, Illinois expensive? In Carroll County, Illinois, the median home is worth about $114,500, and the typical rent is about $818 a month.
How educated are people in Carroll County, Illinois? About 17.8% of adults age 25 and over in Carroll County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Carroll County, Illinois? About 14.2% of people in Carroll County, Illinois live below the federal poverty line.
Has Carroll County, Illinois grown since 1990? Yes, Carroll County, Illinois has shrunk since 1990. The population has lost about 1,229 residents, a change of about -7 percent over that period.
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