61537 ZIP Code — Henry, IL

Marshall County, Illinois

ZIP code 61537 is located in Henry, Illinois, within Marshall County. It covers approximately 57.13 square miles and serves a population of 2,727 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61537

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $120,300. Owner-occupancy sits near the national average at 74%.

Median household income is $58,864. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.

College attainment at 19% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 61537 reflects a community defined by a trades-oriented workforce and a significant Social Security-dependent population.

2,727

population

57.13

sq mi land

Standard

ZIP type

Central (CT)

timezone

61537 ZIP code map

Cities in ZIP code 61537

Below are the cities the US Postal Service accepts for ZIP code 61537. Using any city not on this list may result in mail delivery delays.

City	Status
Henry	Acceptable
Henry	Preferred

Nearby ZIP codes

61565 Sparland (6.5 mi) 61560 Putnam (6.5 mi) 61540 Lacon (6.7 mi) 61336 Magnolia (9.9 mi) 61421 Bradford (10.6 mi) 61375 Varna (11.4 mi) 61327 Hennepin (11.5 mi) 61335 Mc Nabb (12.8 mi) 61368 Tiskilwa (13 mi) 61523 Chillicothe (14 mi) 61570 Washburn (15.2 mi) 61526 Edelstein (15.3 mi)

Demographics updated 05/2026

Population
Total population	2,727
Population density	48 / sq mi
State FIPS	17
County FIPS	123

Geography
Land area	57.13 sq mi
Water area	0.82 sq mi
Latitude	41.0981
Longitude	-89.4463
Timezone	Central (CT)
Area code	309

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.3%	44.0%	37.2%
$50k – $100k	32.1%	34.0%	29.6%
$100k – $200k	17.2%	19.8%	24.4%
Over $200k	1.4%	2.1%	8.8%

Demographics & statistics

2,727

Population

People per sq mi

44.4

Median age

$58,864

Median household income

$31,794

Per capita income

$120,300

Median home value

$705

Median monthly rent

73.8%

Home ownership

13.7%

Poverty rate

2.1%

Unemployment

1,003

Housing units

18.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

156

25–34

159

133

35–44

135

216

45–54

219

55–59

60–64

156

65–74

158

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	602	22.1%
18 and over	2,125	77.9%
65 and over	589	21.6%
Median age	44.4 years

Race & ethnicity

White 95.6%

Two or more races 3.1%

Hispanic or Latino 0.9%

Black or African American 0.3%

Asian 0.2%

Group	Count	%
White	2,630	95.6%
Two or more races	84	3.1%
Hispanic or Latino	25	0.9%
Black or African American	8	0.3%
Asian	5	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.3%	44.0%	37.2%
$50k – $100k	32.1%	34.0%	29.6%
$100k – $200k	17.2%	19.8%	24.4%
Over $200k	1.4%	2.1%	8.8%

Under $10k 8.4%

$10k–$15k 3.3%

$15k–$25k 13.0%

$25k–$35k 8.7%

$35k–$50k 8.9%

$50k–$75k 15.6%

$75k–$100k 18.0%

$100k–$150k 15.8%

$150k–$200k 3.2%

$200k+ 5.0%

Range	% of households
Under $10k	8.4%
$10k–$15k	3.3%
$15k–$25k	13.0%
$25k–$35k	8.7%
$35k–$50k	8.9%
$50k–$75k	15.6%
$75k–$100k	18.0%
$100k–$150k	15.8%
$150k–$200k	3.2%
$200k+	5.0%
Median income	$58,864

Housing

Home values

Under $50k 4.3%

$50k–$100k 35.9%

$100k–$150k 28.2%

$150k–$200k 12.9%

$200k–$300k 15.3%

$300k–$500k 2.3%

$500k–$1M 1.1%

Housing overview

Metric	Value
Median home value	$120,300
Median rent / month	$705
Owner occupied	73.8%
Renter occupied	26.2%
Vacant	9.5%
Single-family detached	87.9%
Large apartment buildings	0.0%
Mobile homes	2.5%
Median rooms	6.2
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.0%
2010–2019	0.2%
2000–2009	2.1%
1990–1999	7.3%
1980–1989	7.9%
1970–1979	20.2%
1960–1969	10.5%
1950–1959	11.9%
1940–1949	8.1%
1939 or earlier	31.7%

Bedrooms

Size	% of units
No bedroom (studio)	3.8%
1 bedroom	5.4%
2 bedrooms	24.8%
3 bedrooms	50.3%
4 bedrooms	12.8%
5+ bedrooms	2.9%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	35.0%
2 vehicles	31.5%
3 or more	27.7%

Heating fuel

Fuel type	%
Utility gas	72.4%
Electricity	17.6%
Propane / LP gas	9.7%

Households & families

Household type	Count	%
Married-couple family	524	44.0%
Cohabiting couple	114	9.6%
Male householder, no spouse	194	16.3%
Female householder, no spouse	358	30.1%
Households with children under 18	368	30.9%
Households with seniors (65+)	415	34.9%
Average household size	2.23

Marital status

Status	Male	Female
Never married	34.0%	26.1%
Married	52.4%	43.8%
Separated	0.0%	3.0%
Widowed	3.2%	19.6%
Divorced	10.4%	7.4%

Education

Less than 9th grade 2.0%

Some HS, no diploma 5.9%

HS graduate 39.8%

Some college, no degree 24.1%

Associate's degree 9.5%

Bachelor's degree 14.6%

Graduate / professional 4.1%

Metric	%
HS diploma or higher	92.1%
Bachelor's or higher	18.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	54	10.2%
Kindergarten	10	1.9%
Elementary school	311	58.8%
High school	99	18.7%
College / grad school	55	10.4%

Employment

Industry of employment

Education & healthcare 21.5%

Manufacturing 20.8%

Other services 8.4%

Construction 7.1%

Retail trade 6.4%

Arts, food & hospitality 6.1%

Finance & real estate 5.4%

Transportation & utilities 5.2%

Wholesale trade 4.9%

Agriculture & mining 4.5%

Public administration 4.5%

Professional & management 3.7%

Information 1.6%

Occupation

Category	%
Management, business & arts	31.5%
Service	16.0%
Sales & office	14.3%
Natural resources & construction	14.3%
Production & transportation	23.9%

Employment type

Type	%
Private sector	69.6%
Government	22.4%
Self-employed	6.8%
Unpaid family workers	1.3%

Commute

Method	%
Drive alone	88.3%
Carpool	5.5%
Public transit	0.0%
Walk	0.0%
Work from home	5.3%
Other means	0.9%
Avg commute (minutes)	25.7

Poverty

All people 13.7%

Under 18 years 15.8%

18 and over 13.2%

Married-couple families 4.4%

Female-led households 43.3%

Income support

Source	% of households
Social Security	36.9%
Retirement income	24.7%
Supplemental Security	7.6%
Cash public assistance	5.7%
Food stamps / SNAP	12.7%

Health indicators

Condition	%
Obesity	33.8%
High blood pressure	35.8%
High cholesterol	36.2%
Diabetes	10.7%
Heart disease	7.7%
Stroke	3.5%
Asthma	9.6%
Arthritis	30.0%
Kidney disease	3.3%
Pulmonary disease	8.0%
Cancer	8.2%

Behavior / access	%
Smoking	17.7%
Binge drinking	14.4%
No physical activity	25.2%
Less than 7 hrs sleep	31.2%
Depression	17.4%
Fair or poor health	14.7%
Poor mental health	12.4%
Poor physical health	10.5%
No health insurance	9.9%
Visited doctor (checkup)	77.9%
Visited dentist	65.2%
Cholesterol screening	90.7%
Teeth loss	14.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	219	10.3%

Disability	%
Any disability	14.1%
Under 18	0.0%
18–64 years	13.7%
65 and over	31.2%

Health insurance coverage

Type	%
Private insurance	69.1%
Public insurance	43.1%
No insurance	5.1%
Uninsured under 19	2.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,542	93.2%
Spanish	14	0.6%
Other Indo-European	2	0.1%
Asian & Pacific Islander	12	0.5%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,722	99.8%
Born in same state	2,722	99.8%
Born in different state	2,307	84.6%
Foreign born	0	0.0%
Naturalized citizen	5	0.2%
Not a US citizen	5	100.0%

Ancestry

Ancestry	Count	%
Italian	451	16.5%
French	347	12.7%
Arab	297	10.9%
Norwegian	42	1.5%

Ancestry	Count	%
English	33	1.2%
Dutch	27	1%
Polish	9	0.3%

Technology access

Metric	% of households
Computer access	43.6%
Internet access	88.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 61537

What city is ZIP code 61537 in?

ZIP code 61537 is primarily assigned to Henry, Illinois.

What county is ZIP code 61537 in?

ZIP code 61537 falls within Marshall County, Illinois.

Does ZIP code 61537 have a large retiree population?

37% of households in ZIP code 61537 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 61537?

The median home value in ZIP code 61537 is $120,300.

Does ZIP code 61537 have a large veteran population?

10% of civilians in ZIP code 61537 are veterans, above the national average of ~7%.

What is the population of ZIP code 61537?

ZIP code 61537 has an estimated population of 2,727 residents, with a density of 48 people per square mile.

What timezone is ZIP code 61537 in?

ZIP code 61537 observes the CST timezone.