Calhoun County, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 100th-largest in Illinois
The population of Calhoun County, Illinois is 4,406 as of the 2023 American Community Survey, making it the 100th-largest county in Illinois. The median household income is $92,095, the median home value is $174,000, and the median age is 48.5.
The population of Calhoun County has declined 17.1% since 2010 (5,093 → 4,224), a -1.33% annualized rate.
4,406
Population
-1.33%
Annual growth
17
People / sq mi
$92,095
Median Income
$174,000
Median Home Value
Calhoun County covers 254 sq mi of land at 17.4 people per square mile.
About Calhoun County, IL
Homeownership is the standout figure in Calhoun County: 89.1% of homes are owner-occupied, higher than the national rate. Calhoun County is a county in Illinois with a population of 4,406.
Earnings sit at the high end: a median household income of $92,095, above the US median of $78,538. Poverty is relatively low for US counties at 5.4%, below the national 12.4%. The typical home is valued at $174,000, with typical rent around $479.
Roughly 18.4% of adults have a bachelor’s, below the national 35.0%. An unusually large 16.8% of workers are remote, above the national 14.0%, and the average commute runs about 49 minutes each way.
The ownership rate anchors the housing story in Calhoun County, and tends to move with the age structure and home-value figures above.
Calhoun County Population History (2010-2024)
The county of Calhoun County had a population of 5,093 in 2010 and 4,224 in 2024, a -17.1% growth over 14 years. The peak was 5,093 in 2010. Average annual growth rate: -1.31%.
4,224
Population (2024)
5,093
Population (2010)
5,093
Peak (2010)
-1.31%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 5,093 |
| 2011 | 5,047 |
| 2012 | 4,983 |
| 2013 | 5,006 |
| 2014 | 4,923 |
| 2015 | 4,858 |
| 2016 | 4,872 |
| 2017 | 4,847 |
| 2018 | 4,834 |
| 2019 | 4,740 |
| 2020 | 4,403 |
| 2021 | 4,392 |
| 2022 | 4,335 |
| 2023 | 4,293 |
| 2024 | 4,224 |
Race & Ethnicity
| White | 94.9% |
| Black or African American | 1.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Age & Sex
48.5
Median Age
48.4%
Female
51.6%
Male
24.6%
Age 65+
Age Distribution
Children (under 15): 16.5% · Seniors (65+): 24.6%
Income & Poverty
| Median household income | $92,095+$10,393 vs state |
| Mean household income | $105,411 |
| Per-capita income | $33,749 |
| Poverty rate | 5.4%-2.8% vs state |
| Unemployment rate | 2.0% |
| Employment-to-population | 51.3% |
Top Industries by Employment
The largest employment sector in Calhoun County is professional & business services, accounting for 28.8% of workers.
How residents commute
0.0%
Drive alone
0.1%
Carpool
75.6%
Public transit
16.8%
Work from home
49.4 min
Avg commute
Housing
$174,000$-76,500 vs state
Median home value
$479
Median rent
89.1%
Homeownership rate
2,298
Total housing units
53.2%
Occupied
46.8%
Vacant
10.9%
Renter-occupied
Social & access
98.7%
With health insurance
88.5%
With broadband internet
19.9%
Foreign-born
10.1%
Veterans (18+)
18.8%
With a disability
99.3%
Speak language other than English at home
Education
93.4%
High School+
18.4%
Bachelor's+
Largest cities in Illinois
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County rankings
Frequently Asked Questions
Calhoun County, Illinois has a population of 4,406 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 100th-largest county in Illinois. Population density is 17 people per square mile.
The population of Calhoun County has declined 17.1% since 2010 (5,093 → 4,224), a -1.33% annualized rate.
The median household income in Calhoun County, Illinois is $92,095, with mean (average) household income of $105,411 and per-capita income of $33,749. 5.4% of residents live below the federal poverty level.
In Calhoun County, the largest racial and ethnic groups are White (94.9%), Black or African American (1.0%), Hispanic or Latino (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Calhoun County, Illinois is 48.5 years. Residents are 48.4% female and 51.6% male.
The median home value in Calhoun County is $174,000 and median monthly rent is $479. 89.1% of occupied housing units are owner-occupied. The county has 2,298 total housing units, 46.8% of which are vacant.
The largest employment sector in Calhoun County, Illinois is professional, scientific, and management services, employing 28.8% of workers. The unemployment rate is 2.0%.
Chicago is among the largest cities associated with Calhoun County, Illinois, with a population of 2,707,648.
Calhoun County, IL Climate
Calhoun County, IL has an average annual temperature of 12.1°C (54°F) and receives about 941 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.1°C
Avg Temp
941
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 27° | 42 mm |
| February | 0° / 33° | 46 mm |
| March | 6° / 43° | 83 mm |
| April | 12° / 54° | 95 mm |
| May | 18° / 64° | 104 mm |
| June | 22° / 72° | 90 mm |
| July | 25° / 77° | 95 mm |
| August | 24° / 75° | 82 mm |
| September | 20° / 68° | 85 mm |
| October | 14° / 56° | 71 mm |
| November | 6° / 44° | 79 mm |
| December | 0° / 32° | 69 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 Calhoun County, IL
The most comfortable months to visit Calhoun County, IL are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -8°C low). May is usually the wettest month.
Where to stay near Calhoun County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.