Henderson County, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 92nd-largest in Illinois
The population of Henderson County, Illinois is 6,284 as of the 2023 American Community Survey, making it the 92nd-largest county in Illinois. The median household income is $65,651, the median home value is $101,600, and the median age is 49.8.
The population of Henderson County has declined 17.6% since 2010 (7,344 → 6,048), a -1.38% annualized rate.
6,284
Population
-1.38%
Annual growth
17
People / sq mi
$65,651
Median Income
$101,600
Median Home Value
Henderson County covers 379 sq mi of land at 16.6 people per square mile.
About Henderson County, IL
Homeownership is the standout figure in Henderson County: 85.5% of homes are owner-occupied, higher than the national rate. With 6,284 residents, Henderson County is a county in Illinois.
Household earnings are middling, with a median of $65,651 — below the US median of $78,538. The poverty rate is 10.2%, below the national 12.4%. Home prices sit near the bottom of the range at $101,600, with typical rent around $834.
Roughly 19.2% of adults have a bachelor’s, below the national 35.0%. Just 5.5% of workers are home-based, below the national 14.0%, and the average commute runs about 28 minutes each way.
The ownership rate anchors the housing story in Henderson County, and tends to move with the age structure and home-value figures above.
Henderson County Population History (2010-2024)
The county of Henderson County had a population of 7,344 in 2010 and 6,048 in 2024, a -17.6% growth over 14 years. The peak was 7,344 in 2010. Average annual growth rate: -1.37%.
6,048
Population (2024)
7,344
Population (2010)
7,344
Peak (2010)
-1.37%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 7,344 |
| 2011 | 7,221 |
| 2012 | 7,048 |
| 2013 | 6,969 |
| 2014 | 7,018 |
| 2015 | 7,001 |
| 2016 | 6,889 |
| 2017 | 6,824 |
| 2018 | 6,726 |
| 2019 | 6,709 |
| 2020 | 6,335 |
| 2021 | 6,309 |
| 2022 | 6,168 |
| 2023 | 6,105 |
| 2024 | 6,048 |
Race & Ethnicity
| White | 95.2% |
| Black or African American | 0.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.3% |
| Two or More Races | 0.0% |
Age & Sex
49.8
Median Age
49.6%
Female
50.4%
Male
26.7%
Age 65+
Age Distribution
Children (under 15): 15.5% · Seniors (65+): 26.7%
Income & Poverty
| Median household income | $65,651$-16,051 vs state |
| Mean household income | $75,442 |
| Per-capita income | $32,763 |
| Poverty rate | 10.2%+2.0% vs state |
| Unemployment rate | 5.0% |
| Employment-to-population | 52.6% |
Top Industries by Employment
The largest employment sector in Henderson County is professional & business services, accounting for 20.4% of workers.
How residents commute
0.5%
Drive alone
0.9%
Carpool
86.9%
Public transit
5.5%
Work from home
27.6 min
Avg commute
Housing
$101,600$-148,900 vs state
Median home value
$834
Median rent
85.5%
Homeownership rate
3,374
Total housing units
78.9%
Occupied
21.1%
Vacant
14.5%
Renter-occupied
Social & access
97.2%
With health insurance
87.2%
With broadband internet
51.8%
Foreign-born
9.2%
Veterans (18+)
19.2%
With a disability
98.8%
Speak language other than English at home
Education
92.1%
High School+
19.2%
Bachelor's+
Largest cities in Illinois
Other counties in Illinois
Part of Illinois
Metro areas in Illinois
County rankings
Frequently Asked Questions
Henderson County, Illinois has a population of 6,284 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 92nd-largest county in Illinois. Population density is 17 people per square mile.
The population of Henderson County has declined 17.6% since 2010 (7,344 → 6,048), a -1.38% annualized rate.
The median household income in Henderson County, Illinois is $65,651, with mean (average) household income of $75,442 and per-capita income of $32,763. 10.2% of residents live below the federal poverty level.
In Henderson County, the largest racial and ethnic groups are White (95.2%), Hispanic or Latino (2.3%), Black or African American (0.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Henderson County, Illinois is 49.8 years. Residents are 49.6% female and 50.4% male.
The median home value in Henderson County is $101,600 and median monthly rent is $834. 85.5% of occupied housing units are owner-occupied. The county has 3,374 total housing units, 21.1% of which are vacant.
The largest employment sector in Henderson County, Illinois is professional, scientific, and management services, employing 20.4% of workers. The unemployment rate is 5.0%.
Chicago is among the largest cities associated with Henderson County, Illinois, with a population of 2,707,648.
Henderson County, IL Climate
Henderson County, IL has an average annual temperature of 10.6°C (51°F) and receives about 925 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.6°C
Avg Temp
925
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -5° / 22° | 37 mm |
| February | -2° / 28° | 34 mm |
| March | 4° / 40° | 71 mm |
| April | 11° / 52° | 96 mm |
| May | 17° / 63° | 102 mm |
| June | 22° / 72° | 102 mm |
| July | 24° / 76° | 104 mm |
| August | 23° / 73° | 95 mm |
| September | 19° / 66° | 103 mm |
| October | 12° / 54° | 70 mm |
| November | 4° / 40° | 61 mm |
| December | -2° / 28° | 50 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 Henderson County, IL
The most comfortable months to visit Henderson County, IL are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -10°C low). July is usually the wettest month.
Where to stay near Henderson County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.