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 distinguished by its share of foreign-born residents, 14.2% of the population. Logan County is a county in Illinois with a population of 27,870. It ranks #49 among counties in Illinois by population.
Household earnings are middling, with a median of $64,188 — below the US median of $78,538. Poverty runs at 11.2%, below the national 12.4%. Housing is relatively affordable, with a median home value of $125,900, with typical rent around $804.
19.9% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. Remote work is below the national 14.0% at 7.3%, and the average commute runs about 21 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+
Largest cities in Illinois
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.