Mendon ZIP Codes — Adams County, IL

There is one unique ZIP code in Mendon, Illinois and it is 62351. Area code: 217.

ZIP codes

72.84

sq mi land

0.34

sq mi water

217

area code

Mendon, IL ZIP code map

About Mendon, IL

Mendon, Illinois, is a quaint village located in the heart of Adams County. Known for its tight-knit community and rural charm, Mendon offers a peaceful lifestyle away from the hustle and bustle of larger cities. The village boasts a rich history and is characterized by its small-town atmosphere and friendly residents.

Location & geography

Mendon is situated in west-central Illinois, approximately 10 miles northeast of Quincy, 15 miles southeast of Pittsfield, and 20 miles southwest of Macomb. The village covers a total land area of 72.84 square miles, with a minimal water area of 0.34 square miles. The surrounding terrain is predominantly flat, making it ideal for agriculture and outdoor recreational activities.

Community & economy

The community of Mendon is characterized by its friendly residents and a strong sense of belonging among its inhabitants. Many local industries are centered around agriculture, which plays a vital role in the economy and daily life of the residents. Events and gatherings often bring together the community, fostering relationships and celebrating the village's heritage.

Transportation

Mendon is accessible via several notable highways, including Illinois Route 104. The nearest significant airport is Quincy Regional Airport, which is located about 18 miles to the southwest. Public transportation options are limited, but residents often rely on personal vehicles to navigate the area.

History

Mendon was founded in the mid-19th century, and its early economy was heavily dependent on agriculture and local commerce. Over the years, the village has maintained its agricultural roots while also fostering a sense of community through various events and initiatives. Notable events in Mendon's history include local fairs and seasonal festivals that celebrate its rich heritage.

Did you know?

Mendon is home to a unique blend of rural charm and community spirit that can be surprising to visitors. Additionally, the village is known for its local parks and outdoor activities, making it a hidden gem for those seeking a quiet retreat in Illinois.

ZIP codes for Mendon, IL (1)

ZIP code	City	County	Map
62351	Mendon	Adams	View map

Demographics & statistics

1,934

Population

38.9

Median age

$76,071

Median household income

$36,174

Per capita income

$145,600

Median home value

$842

Median monthly rent

87.9%

Home ownership

8.8%

Poverty rate

2.3%

Unemployment

710

Housing units

23.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

107

25–34

109

126

35–44

129

118

45–54

121

55–59

60–64

122

65–74

126

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	501	25.9%
18 and over	1,433	74.1%
65 and over	366	18.9%
Median age	38.9 years

Race & ethnicity

White 99%

Two or more races 0.7%

Hispanic or Latino 0.2%

Other race 0.2%

Group	Count	%
White	1,918	99%
Two or more races	13	0.7%
Hispanic or Latino	3	0.2%
Other race	3	0.2%

Household income

Under $10k 6.1%

$10k–$15k 2.1%

$15k–$25k 3.7%

$25k–$35k 5.9%

$35k–$50k 6.4%

$50k–$75k 25.4%

$75k–$100k 13.0%

$100k–$150k 25.7%

$150k–$200k 6.3%

$200k+ 5.5%

Range	% of households
Under $10k	6.1%
$10k–$15k	2.1%
$15k–$25k	3.7%
$25k–$35k	5.9%
$35k–$50k	6.4%
$50k–$75k	25.4%
$75k–$100k	13.0%
$100k–$150k	25.7%
$150k–$200k	6.3%
$200k+	5.5%
Median income	$76,071

Housing

Home values

Under $50k 3.9%

$50k–$100k 32.1%

$100k–$150k 15.6%

$150k–$200k 23.3%

$200k–$300k 14.2%

$300k–$500k 6.1%

$500k–$1M 4.8%

Housing overview

Metric	Value
Median home value	$145,600
Median rent / month	$842
Owner occupied	87.9%
Renter occupied	12.1%
Vacant	6.1%
Single-family detached	86.8%
Large apartment buildings	0.0%
Mobile homes	8.9%
Median rooms	6.3
Avg household size (owned)	2.51

Year built

Era	%
2020 or later	0.0%
2010–2019	5.0%
2000–2009	10.7%
1990–1999	9.6%
1980–1989	5.7%
1970–1979	22.7%
1960–1969	14.6%
1950–1959	9.6%
1940–1949	2.4%
1939 or earlier	19.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	2.5%
2 bedrooms	27.5%
3 bedrooms	44.7%
4 bedrooms	18.2%
5+ bedrooms	5.9%

Vehicles per household

Vehicles	% of households
No vehicle	3.9%
1 vehicle	24.6%
2 vehicles	43.0%
3 or more	28.6%

Heating fuel

Fuel type	%
Utility gas	54.8%
Electricity	24.3%
Propane / LP gas	16.1%
Wood	3.9%

Households & families

Household type	Count	%
Married-couple family	434	57.7%
Cohabiting couple	43	5.7%
Male householder, no spouse	135	18.0%
Female householder, no spouse	140	18.6%
Households with children under 18	261	34.7%
Households with seniors (65+)	255	33.9%
Average household size	2.51

Marital status

Status	Male	Female
Never married	26.8%	21.4%
Married	61.5%	58.6%
Separated	0.0%	0.9%
Widowed	4.8%	11.1%
Divorced	6.9%	8.0%

Education

Less than 9th grade 1.4%

Some HS, no diploma 3.4%

HS graduate 35.2%

Some college, no degree 23.5%

Associate's degree 13.0%

Bachelor's degree 15.2%

Graduate / professional 8.4%

Metric	%
HS diploma or higher	95.2%
Bachelor's or higher	23.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	24	5.2%
Kindergarten	44	9.4%
Elementary school	273	58.6%
High school	62	13.3%
College / grad school	63	13.5%

Employment

Industry of employment

Education & healthcare 22.9%

Retail trade 16.8%

Manufacturing 9.0%

Wholesale trade 8.9%

Other services 6.6%

Construction 6.3%

Public administration 6.1%

Transportation & utilities 5.6%

Agriculture & mining 4.6%

Arts, food & hospitality 4.6%

Finance & real estate 3.8%

Professional & management 3.2%

Information 1.5%

Occupation

Category	%
Management, business & arts	33.8%
Service	16.6%
Sales & office	24.6%
Natural resources & construction	11.2%
Production & transportation	13.8%

Employment type

Type	%
Private sector	78.3%
Government	14.9%
Self-employed	6.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	89.1%
Carpool	5.9%
Public transit	0.0%
Walk	1.8%
Other means	0.0%
Avg commute (minutes)	21.6

Poverty

All people 8.8%

Under 18 years 12.4%

18 and over 7.4%

Married-couple families 1.4%

Female-led households 40.4%

Income support

Source	% of households
Social Security	29.4%
Retirement income	19.4%
Supplemental Security	3.9%
Cash public assistance	1.7%
Food stamps / SNAP	6.5%

Health indicators

Condition	%
High blood pressure	35.0%
High cholesterol	33.5%
Heart disease	7.0%
Stroke	3.2%
Asthma	9.4%
Arthritis	28.1%
Kidney disease	3.0%
Pulmonary disease	7.2%
Cancer	8.0%

Behavior / access	%
Binge drinking	15.4%
No physical activity	24.4%
Less than 7 hrs sleep	30.4%
Fair or poor health	13.2%
Poor mental health	12.1%
Poor physical health	9.6%
No health insurance	9.6%
Visited doctor (checkup)	77.3%
Visited dentist	65.8%
Cholesterol screening	90.8%
Teeth loss	13.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	97	6.8%

Disability	%
Any disability	14.4%
Under 18	4.0%
18–64 years	12.9%
65 and over	34.8%

Health insurance coverage

Type	%
Private insurance	82.6%
Public insurance	25.5%
Uninsured under 19	1.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,828	94.5%
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)	1,933	99.9%
Born in same state	1,933	99.9%
Born in different state	1,623	83.9%
Foreign born	0	0.0%
Naturalized citizen	1	0.1%
Not a US citizen	1	100.0%

Ancestry

Ancestry	Count	%
Italian	157	8.1%
French	138	7.1%
Arab	68	3.5%

Ancestry	Count	%
Polish	26	1.3%
English	16	0.8%

Technology access

Metric	% of households
Computer access	38.9%
Internet access	89.0%

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

Frequently asked questions

What ZIP codes does Mendon, IL have?

Mendon, IL has one ZIP code: 62351. Each ZIP code serves a distinct delivery area within the city and surrounding region.