61540 ZIP Code — Lacon, IL

Marshall County, Illinois

ZIP code 61540 is located in Lacon, Illinois, within Marshall County. It covers approximately 52.65 square miles and serves a population of 2,771 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61540

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 $138,100. Owner-occupancy is high at 80%, well above the national average.

Median household income is $69,444. 42% 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 32 minutes is near the national average.

College attainment at 17% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 61540 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

2,771

population

52.65

sq mi land

Standard

ZIP type

Central (CT)

timezone

61540 ZIP code map

Cities in ZIP code 61540

Below are the cities the US Postal Service accepts for ZIP code 61540. Using any city not on this list may result in mail delivery delays.

City	Status
Lacon	Preferred

Nearby ZIP codes

61537 Henry (6.7 mi) 61375 Varna (7.1 mi) 61565 Sparland (7.3 mi) 61570 Washburn (8.4 mi) 61545 Lowpoint (9.3 mi) 61336 Magnolia (10.2 mi) 61523 Chillicothe (10.6 mi) 61369 Toluca (11.7 mi) 61560 Putnam (12.5 mi) 61548 Metamora (13.8 mi) 61335 Mc Nabb (14 mi) 61526 Edelstein (14.1 mi)

Demographics updated 06/2026

Population
Total population	2,771
Population density	53 / sq mi
State FIPS	17
County FIPS	123

Geography
Land area	52.65 sq mi
Water area	6.36 sq mi
Latitude	41.0125
Longitude	-89.3840
Timezone	Central (CT)
Area code	309

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.8%	44.0%	37.2%
$50k – $100k	34.8%	34.0%	29.6%
$100k – $200k	23.9%	19.8%	24.4%
Over $200k	2.5%	2.1%	8.8%

Demographics & statistics

2,771

Population

People per sq mi

45.1

Median age

$69,444

Median household income

$35,722

Per capita income

$138,100

Median home value

$870

Median monthly rent

79.8%

Home ownership

13.0%

Poverty rate

5.3%

Unemployment

1,025

Housing units

16.9%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

106

15–19

111

20–24

121

25–34

128

166

35–44

174

130

45–54

137

107

55–59

113

131

60–64

138

140

65–74

147

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	617	22.3%
18 and over	2,154	77.7%
65 and over	634	22.9%
Median age	45.1 years

Race & ethnicity

White 95.5%

Black or African American 1.5%

Hispanic or Latino 1.2%

Other race 1.1%

Asian 0.6%

Two or more races 0.1%

Group	Count	%
White	2,678	95.5%
Black or African American	41	1.5%
Hispanic or Latino	34	1.2%
Other race	31	1.1%
Asian	16	0.6%
Two or more races	4	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.8%	44.0%	37.2%
$50k – $100k	34.8%	34.0%	29.6%
$100k – $200k	23.9%	19.8%	24.4%
Over $200k	2.5%	2.1%	8.8%

Under $10k 5.2%

$10k–$15k 1.6%

$15k–$25k 10.8%

$25k–$35k 5.1%

$35k–$50k 11.1%

$50k–$75k 20.6%

$75k–$100k 11.1%

$100k–$150k 23.2%

$150k–$200k 7.2%

$200k+ 4.3%

Range	% of households
Under $10k	5.2%
$10k–$15k	1.6%
$15k–$25k	10.8%
$25k–$35k	5.1%
$35k–$50k	11.1%
$50k–$75k	20.6%
$75k–$100k	11.1%
$100k–$150k	23.2%
$150k–$200k	7.2%
$200k+	4.3%
Median income	$69,444

Housing

Home values

Under $50k 5.2%

$50k–$100k 24.8%

$100k–$150k 22.5%

$150k–$200k 16.7%

$200k–$300k 21.4%

$300k–$500k 9.0%

$500k–$1M 0.4%

Housing overview

Metric	Value
Median home value	$138,100
Median rent / month	$870
Owner occupied	79.8%
Renter occupied	20.2%
Vacant	14.6%
Single-family detached	90.6%
Large apartment buildings	0.3%
Mobile homes	1.5%
Median rooms	6.5
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	1.0%
2000–2009	6.2%
1990–1999	4.8%
1980–1989	6.5%
1970–1979	19.8%
1960–1969	9.9%
1950–1959	15.3%
1940–1949	8.8%
1939 or earlier	27.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	5.1%
2 bedrooms	27.0%
3 bedrooms	47.3%
4 bedrooms	17.6%
5+ bedrooms	2.3%

Vehicles per household

Vehicles	% of households
No vehicle	3.1%
1 vehicle	20.4%
2 vehicles	43.7%
3 or more	32.8%

Heating fuel

Fuel type	%
Utility gas	52.6%
Electricity	25.5%
Propane / LP gas	15.9%
Fuel oil	0.9%
Wood	4.4%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	665	62.9%
Cohabiting couple	49	4.6%
Male householder, no spouse	97	9.2%
Female householder, no spouse	247	23.3%
Households with children under 18	341	32.2%
Households with seniors (65+)	398	37.6%
Average household size	2.52

Marital status

Status	Male	Female
Never married	28.8%	19.3%
Married	63.3%	55.3%
Separated	1.7%	1.5%
Widowed	2.1%	12.8%
Divorced	4.0%	11.0%

Education

Less than 9th grade 2.7%

Some HS, no diploma 1.4%

HS graduate 43.7%

Some college, no degree 21.2%

Associate's degree 14.1%

Bachelor's degree 11.0%

Graduate / professional 5.9%

Metric	%
HS diploma or higher	95.9%
Bachelor's or higher	16.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	14	2.5%
Kindergarten	24	4.3%
Elementary school	242	43.6%
High school	194	35.0%
College / grad school	81	14.6%

Employment

Industry of employment

Education & healthcare 27.6%

Manufacturing 14.7%

Arts, food & hospitality 10.4%

Transportation & utilities 9.2%

Retail trade 7.5%

Construction 7.4%

Wholesale trade 6.4%

Other services 4.4%

Agriculture & mining 4.3%

Professional & management 3.5%

Finance & real estate 2.3%

Public administration 2.3%

Information 0.1%

Occupation

Category	%
Management, business & arts	30.4%
Service	20.1%
Sales & office	19.7%
Natural resources & construction	13.8%
Production & transportation	15.9%

Employment type

Type	%
Private sector	80.8%
Government	14.5%
Self-employed	4.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	85.8%
Carpool	5.0%
Public transit	0.0%
Walk	2.6%
Work from home	6.3%
Other means	0.3%
Avg commute (minutes)	32.3

Poverty

All people 13.0%

Under 18 years 19.1%

18 and over 11.4%

Married-couple families 2.9%

Female-led households 40.0%

Income support

Source	% of households
Social Security	41.9%
Retirement income	31.8%
Supplemental Security	6.0%
Cash public assistance	1.4%
Food stamps / SNAP	10.7%

Health indicators

Condition	%
Obesity	33.6%
High blood pressure	35.6%
High cholesterol	35.5%
Diabetes	10.6%
Heart disease	7.6%
Stroke	3.5%
Asthma	9.5%
Arthritis	29.9%
Kidney disease	3.2%
Pulmonary disease	7.9%
Cancer	8.2%

Behavior / access	%
Smoking	17.5%
Binge drinking	14.4%
No physical activity	25.1%
Less than 7 hrs sleep	31.3%
Depression	17.4%
Fair or poor health	14.5%
Poor mental health	12.4%
Poor physical health	10.3%
No health insurance	10.0%
Visited doctor (checkup)	77.8%
Visited dentist	65.8%
Cholesterol screening	90.6%
Teeth loss	14.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	192	8.9%

Disability	%
Any disability	12.4%
Under 18	1.9%
18–64 years	10.7%
65 and over	28.4%

Health insurance coverage

Type	%
Private insurance	72.7%
Public insurance	39.6%
No insurance	3.1%
Uninsured under 19	0.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,620	94.6%
Spanish	4	0.2%
Other Indo-European	4	0.2%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,771	100.0%
Born in same state	2,752	99.3%
Born in different state	2,425	87.5%
Foreign born	19	0.7%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	362	13.1%
French	328	11.8%
Arab	285	10.3%
Dutch	45	1.6%

Ancestry	Count	%
English	33	1.2%
Polish	21	0.8%
Norwegian	5	0.2%

Technology access

Metric	% of households
Computer access	38.2%
Internet access	87.0%

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

Frequently asked questions about ZIP code 61540

What city is ZIP code 61540 in?

ZIP code 61540 is primarily assigned to Lacon, Illinois.

What county is ZIP code 61540 in?

ZIP code 61540 falls within Marshall County, Illinois.

Does ZIP code 61540 have a large retiree population?

42% of households in ZIP code 61540 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 61540?

The median home value in ZIP code 61540 is $138,100.

What is the population of ZIP code 61540?

ZIP code 61540 has an estimated population of 2,771 residents, with a density of 53 people per square mile.

What is the median household income in ZIP code 61540?

The median household income in ZIP code 61540 is $69,444, below the national median of ~$75,000.

What timezone is ZIP code 61540 in?

ZIP code 61540 observes the CST timezone.