61042 ZIP Code — Harmon, IL

Lee County, Illinois

ZIP code 61042 is located in Harmon, Illinois, within Lee County. It covers approximately 66.71 square miles and serves a population of 428 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815.

About ZIP code 61042

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 $156,900. Owner-occupancy is high at 82%, well above the national average.

Median household income is $67,292. Poverty affects 21% of residents, above the national average. 31% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with manufacturing as the leading industry. The average commute of 27 minutes is near the national average. Remote work is prevalent — 23% of workers work from home.

College attainment at 11% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 61042 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

428

population

66.71

sq mi land

Standard

ZIP type

Central (CT)

timezone

61042 ZIP code map

Cities in ZIP code 61042

Below are the cities the US Postal Service accepts for ZIP code 61042. Using any city not on this list may result in mail delivery delays.

City	Status
Harmon	Preferred

Nearby ZIP codes

61243 Deer Grove (8.4 mi) 61376 Walnut (8.9 mi) 61071 Rock Falls (9.1 mi) 61021 Dixon (9.9 mi) 61310 Amboy (10.2 mi) 61349 Ohio (11.2 mi) 61081 Sterling (13.1 mi) 61283 Tampico (13.5 mi) 61367 Sublette (14.9 mi) 61031 Franklin Grove (16.3 mi) 61330 La Moille (16.9 mi) 61261 Lyndon (19.3 mi)

Demographics updated 05/2026

Population
Total population	428
Population density	6 / sq mi
State FIPS	17
County FIPS	103

Geography
Land area	66.71 sq mi
Water area	0.01 sq mi
Latitude	41.6916
Longitude	-89.5512
Timezone	Central (CT)
Area code	815

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	52.4%	43.1%	37.2%
$50k – $100k	20.5%	33.4%	29.6%
$100k – $200k	25.6%	19.8%	24.4%
Over $200k	1.6%	3.8%	8.8%

Demographics & statistics

428

Population

People per sq mi

43.1

Median age

$67,292

Median household income

$33,463

Per capita income

$156,900

Median home value

$914

Median monthly rent

82.2%

Home ownership

21.0%

Poverty rate

1.6%

Unemployment

155

Housing units

11.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	61	14.3%
18 and over	367	85.7%
65 and over	95	22.2%
Median age	43.1 years

Race & ethnicity

White 84.4%

Hispanic or Latino 6.1%

Other race 5.7%

Two or more races 3.7%

Group	Count	%
White	385	84.4%
Hispanic or Latino	28	6.1%
Other race	26	5.7%
Two or more races	17	3.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	52.4%	43.1%	37.2%
$50k – $100k	20.5%	33.4%	29.6%
$100k – $200k	25.6%	19.8%	24.4%
Over $200k	1.6%	3.8%	8.8%

Under $10k 6.5%

$10k–$15k 7.1%

$15k–$25k 6.5%

$25k–$35k 4.7%

$35k–$50k 14.8%

$50k–$75k 17.8%

$75k–$100k 11.8%

$100k–$150k 26.0%

$150k–$200k 1.2%

$200k+ 3.6%

Range	% of households
Under $10k	6.5%
$10k–$15k	7.1%
$15k–$25k	6.5%
$25k–$35k	4.7%
$35k–$50k	14.8%
$50k–$75k	17.8%
$75k–$100k	11.8%
$100k–$150k	26.0%
$150k–$200k	1.2%
$200k+	3.6%
Median income	$67,292

Housing

Home values

Under $50k 7.2%

$50k–$100k 23.7%

$100k–$150k 15.1%

$150k–$200k 16.5%

$200k–$300k 31.7%

$300k–$500k 5.8%

Housing overview

Metric	Value
Median home value	$156,900
Median rent / month	$914
Owner occupied	82.2%
Renter occupied	17.8%
Vacant	8.6%
Single-family detached	91.4%
Large apartment buildings	0.0%
Mobile homes	8.1%
Median rooms	6.1
Avg household size (owned)	2.35

Year built

Era	%
2020 or later	0.0%
2010–2019	2.7%
2000–2009	3.8%
1990–1999	8.6%
1980–1989	4.3%
1970–1979	9.7%
1960–1969	5.4%
1950–1959	6.5%
1940–1949	9.7%
1939 or earlier	49.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.2%
2 bedrooms	29.2%
3 bedrooms	49.2%
4 bedrooms	16.2%
5+ bedrooms	2.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	21.3%
2 vehicles	52.1%
3 or more	26.6%

Heating fuel

Fuel type	%
Utility gas	24.3%
Electricity	19.5%
Propane / LP gas	50.3%

Households & families

Household type	Count	%
Married-couple family	85	50.3%
Cohabiting couple	23	13.6%
Male householder, no spouse	40	23.7%
Female householder, no spouse	21	12.4%
Households with children under 18	35	20.7%
Households with seniors (65+)	62	36.7%
Average household size	2.53

Marital status

Status	Male	Female
Never married	58.6%	16.3%
Married	33.5%	65.1%
Separated	2.1%	0.0%
Widowed	0.4%	7.8%
Divorced	5.4%	10.9%

Education

Less than 9th grade 1.6%

Some HS, no diploma 0.6%

HS graduate 61.1%

Some college, no degree 16.0%

Associate's degree 9.4%

Bachelor's degree 9.7%

Graduate / professional 1.6%

Metric	%
HS diploma or higher	97.8%
Bachelor's or higher	11.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	6	10.2%
Kindergarten	24	40.7%
Elementary school	19	32.2%
High school	3	5.1%
College / grad school	7	11.9%

Employment

Industry of employment

Manufacturing 37.0%

Retail trade 16.5%

Education & healthcare 13.6%

Professional & management 7.4%

Arts, food & hospitality 7.4%

Transportation & utilities 6.2%

Finance & real estate 4.1%

Other services 2.9%

Agriculture & mining 2.1%

Public administration 1.6%

Construction 1.2%

Occupation

Category	%
Management, business & arts	11.5%
Service	8.2%
Sales & office	37.4%
Natural resources & construction	7.0%
Production & transportation	35.8%

Employment type

Type	%
Private sector	91.4%
Government	5.8%
Self-employed	2.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	74.4%
Carpool	2.9%
Public transit	0.0%
Walk	0.0%
Work from home	22.7%
Other means	0.0%
Avg commute (minutes)	26.7

Poverty

All people 21.0%

Under 18 years 3.3%

18 and over 24.0%

Married-couple families 16.5%

Female-led households 0.0%

Income support

Source	% of households
Social Security	30.8%
Retirement income	26.6%
Supplemental Security	1.2%
Cash public assistance	0.0%
Food stamps / SNAP	6.5%

Health indicators

Condition	%
Obesity	35.7%
High blood pressure	34.8%
High cholesterol	33.7%
Diabetes	10.9%
Heart disease	7.3%
Stroke	3.3%
Asthma	9.4%
Arthritis	27.6%
Kidney disease	3.0%
Pulmonary disease	7.9%
Cancer	7.2%

Behavior / access	%
Smoking	19.3%
Binge drinking	15.3%
No physical activity	25.7%
Less than 7 hrs sleep	32.3%
Depression	17.1%
Fair or poor health	15.0%
Poor mental health	12.5%
Poor physical health	10.5%
No health insurance	11.2%
Visited doctor (checkup)	76.6%
Visited dentist	65.0%
Cholesterol screening	90.0%
Teeth loss	15.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	29	7.9%

Disability	%
Any disability	11.2%
Under 18	9.8%
18–64 years	3.7%
65 and over	33.7%

Health insurance coverage

Type	%
Private insurance	75.7%
Public insurance	36.2%
No insurance	4.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	417	97.4%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	428	100.0%
Born in same state	428	100.0%
Born in different state	393	91.8%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	66	15.4%
English	40	9.3%
French	31	7.2%
Dutch	30	7%

Ancestry	Count	%
Arab	16	3.7%
Irish	10	2.3%
Polish	1	0.2%

Technology access

Metric	% of households
Computer access	39.5%
Internet access	87.0%

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

Frequently asked questions about ZIP code 61042

What city is ZIP code 61042 in?

ZIP code 61042 is primarily assigned to Harmon, Illinois.

What county is ZIP code 61042 in?

ZIP code 61042 falls within Lee County, Illinois.

How educated is the population of ZIP code 61042?

11% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the poverty rate in ZIP code 61042?

21% of residents in ZIP code 61042 live below the poverty line, above the national average.

Is ZIP code 61042 mostly owner-occupied?

82% of occupied units in ZIP code 61042 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 61042?

The median home value in ZIP code 61042 is $156,900.

What timezone is ZIP code 61042 in?

ZIP code 61042 observes the CST timezone.