Henry County, Illinois Demographics 2026

Name: Henry County, Illinois Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Henry County, Illinois has a population of 48,643, the 30th most populous county in Illinois. The median household income is $71,911 and the median home value is $151,600. The poverty rate is 8.9%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Henry County Quick Facts

Population 48,643

Median Household Income $71,911

Median Home Value $151,600

Poverty Rate 8.9%

Unemployment Rate 4.8%

Median Age 43.6 years

Homeownership Rate 80.0%

Affordability Ratio 2.1x

Bachelor's Degree+ 24.7%

High School Graduation 92.4%

Cities/Places 18

Population 48,643 30th of 102

Median Income $71,911 14% lower than state

Poverty Rate 8.9%

Unemployment 4.8%

How Henry County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	48,948	48,643	-0.6%
Median household income	$69,912	$71,911	+2.9%
Median home value	$145,300	$151,600	+4.3%

Median Household Income

Henry

$71,911

$83,390

National

$80,734

Median Home Value

Henry

$151,600

$263,300

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 13.6%

$25K-$50K 19.8%

$50K-$100K 32.1%

$100K+ 34.6%

Detailed income brackets

Under $10K

3.7%

$10K-$15K

3.5%

$15K-$20K

3.6%

$20K-$25K

2.8%

$25K-$30K

3.5%

$30K-$35K

3.0%

$35K-$40K

3.8%

$40K-$45K

5.8%

$45K-$50K

3.6%

$50K-$60K

7.6%

$60K-$75K

11.5%

$75K-$100K

13.1%

$100K-$125K

10.1%

$125K-$150K

7.1%

$150K-$200K

10.2%

$200K+

7.2%

Employment

4.8% Unemployment Rate State: 5.8%|National: 5.2%

62.0% Labor Force Participation

Housing Overview

Owner 80.0%

Renter 20.1%

Affordability Index Very Affordable

2.1x home value to income ratio

Median gross rent $842/mo 14.1% of median household income annually

People & Demographics

Age Distribution

Under 18

21.6%

18-34

17.8%

35-54

24.9%

55-74

26.5%

75+

9.2%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 61 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Henry County

City	Population	Median Income	Poverty	Home Value
Kewanee	11,913	$50,886	17.9%	$73,200
Geneseo	6,673	$70,147	2.6%	$205,400
Colona	5,139	$79,700	3.8%	$147,500
Galva	2,454	$52,470	18.8%	$83,700
Cambridge	2,128	$64,979	13.1%	$123,100
Orion	1,812	$94,375	5.2%	$178,500
Atkinson	982	$57,174	5.7%	$119,600
Annawan	865	$70,729	6.7%	$135,100
Alpha	831	$77,639	1.6%	$111,400
Woodhull	731	$65,893	13.3%	$122,400
Andover	434	$77,813	3.7%	$163,600
Cleveland	208	$73,750	5.3%	$178,800
Hooppole	182	$44,261	44.6%	$75,000
Bishop Hill	134	$56,429	9.0%	$102,500
Ophiem	92	$42,969	68.5%	$96,800
Osco	74	$72,778	13.5%	$109,600
Nekoma	49	$18,719	0.0%	N/A
Lynn Center	36	N/A	0.0%	N/A

Explore Illinois Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Henry County is located in Illinois with a total population of 48,643. It is the 30th most populous county out of 102 in Illinois. The county encompasses 18 Census-designated places.

Age Demographics

The median age in Henry County is 43.6 years. This is 12% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Henry County is $71,911. This is 14% lower than the state median of $83,390. It is also 11% lower than the national median of $80,734. The poverty rate stands at 8.9%. This is 25% lower than the state poverty rate of 11.8%. The unemployment rate is 4.8%. This is 17% lower than the state rate of 5.8%. The median home value is $151,600. Housing costs are 42% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.1x, Henry County is one of the most affordable housing markets in the area. 80.0% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 67.1%.

Race & Ethnicity

Henry County has a predominantly White (non-Hispanic) population, comprising 87.0% of all residents. Hispanic or Latino residents account for 6.9%. The Black or African American population (1.0%) is well below the state average of 13.3%. The Hispanic or Latino population (6.9%) is well below the state average of 18.8%. The Asian population (0.5%) is well below the state average of 5.9%.

Education

24.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 35% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.4%.

Data Sources & Methodology

All figures for Henry County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Illinois and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Henry County, Illinois?

Henry County has a population of 48,643, making it the 30th most populous county in Illinois.

What is the median income in Henry County?

The median household income in Henry County is $71,911 with a poverty rate of 8.9%.

How many cities are in Henry County, Illinois?

Henry County contains 18 Census-designated places.