Logan County, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 49th-largest in Illinois
The population of Logan County, Illinois is 27,870 as of the 2023 American Community Survey, making it the 49th-largest county in Illinois. The median household income is $64,188, the median home value is $125,900, and the median age is 40.5.
The population of Logan County has declined 9.1% since 2010 (30,282 → 27,518), a -0.68% annualized rate.
27,870
Population
-0.68%
Annual growth
45
People / sq mi
$64,188
Median Income
$125,900
Median Home Value
Logan County covers 618 sq mi of land at 45.1 people per square mile.
About Logan County, IL
Logan County is a county in Illinois with a population of 27,870. It ranks #49 among counties in Illinois by population. The median age is 40.5, older than the national median. The population is 49.9% male and 50.1% female.
The median household income in Logan County is $64,188, below the US median of $74,580. 11.2% of residents live below the federal poverty level. Home values sit at a median of $125,900, with monthly rent averaging $804. The homeownership rate of 69.3% is higher than the national rate of 64.8%.
Educational attainment in Logan County reflects 19.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.4 minutes each way.
Logan County Population History (2010-2024)
The county of Logan County had a population of 30,282 in 2010 and 27,518 in 2024, a -9.1% growth over 14 years. The peak was 30,359 in 2012. Average annual growth rate: -0.68%.
27,518
Population (2024)
30,282
Population (2010)
30,359
Peak (2012)
-0.68%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 30,282 |
| 2011 | 30,271 |
| 2012 | 30,359 |
| 2013 | 29,829 |
| 2014 | 29,660 |
| 2015 | 29,286 |
| 2016 | 29,167 |
| 2017 | 29,035 |
| 2018 | 28,873 |
| 2019 | 28,633 |
| 2020 | 27,905 |
| 2021 | 27,978 |
| 2022 | 27,654 |
| 2023 | 27,508 |
| 2024 | 27,518 |
Race & Ethnicity
| White | 88.1% |
| Black or African American | 6.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
40.5
Median Age
50.1%
Female
49.9%
Male
19.1%
Age 65+
Age Distribution
Children (under 15): 15.8% · Seniors (65+): 19.1%
Income & Poverty
| Median household income | $64,188$-17,514 vs state |
| Mean household income | $83,185 |
| Per-capita income | $34,109 |
| Poverty rate | 11.2%+3.0% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 53.4% |
Top Industries by Employment
The largest employment sector in Logan County is professional & business services, accounting for 24.6% of workers.
How residents commute
0.5%
Drive alone
2.9%
Carpool
78.9%
Public transit
7.3%
Work from home
21.4 min
Avg commute
Housing
$125,900$-124,600 vs state
Median home value
$804
Median rent
69.3%
Homeownership rate
11,984
Total housing units
92.8%
Occupied
7.2%
Vacant
30.7%
Renter-occupied
Social & access
97.6%
With health insurance
93.5%
With broadband internet
14.2%
Foreign-born
6.0%
Veterans (18+)
14.4%
With a disability
96.5%
Speak language other than English at home
Education
91.5%
High School+
19.9%
Bachelor's+
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Other counties in Illinois
Part of Illinois
Metro areas in Illinois
County rankings
Frequently Asked Questions
Logan County, Illinois has a population of 27,870 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 49th-largest county in Illinois. Population density is 45 people per square mile.
The population of Logan County has declined 9.1% since 2010 (30,282 → 27,518), a -0.68% annualized rate.
The median household income in Logan County, Illinois is $64,188, with mean (average) household income of $83,185 and per-capita income of $34,109. 11.2% of residents live below the federal poverty level.
In Logan County, the largest racial and ethnic groups are White (88.1%), Black or African American (6.0%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Logan County, Illinois is 40.5 years. Residents are 50.1% female and 49.9% male.
The median home value in Logan County is $125,900 and median monthly rent is $804. 69.3% of occupied housing units are owner-occupied. The county has 11,984 total housing units, 7.2% of which are vacant.
The largest employment sector in Logan County, Illinois is professional, scientific, and management services, employing 24.6% of workers. The unemployment rate is 2.5%.
Chicago is among the largest cities associated with Logan County, Illinois, with a population of 2,707,648.
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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.