62351 ZIP Code — Mendon, IL
Adams County, Illinois
ZIP code 62351 is located in Mendon, Illinois, within Adams County. It covers approximately 72.84 square miles and serves a population of 1,934 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 217.
About ZIP code 62351
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $145,600. Owner-occupancy is high at 88%, well above the national average.
Median household income is $76,071.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.
Educational attainment is near the national average, with 24% of residents holding a bachelor's degree or higher.
1,934
population
72.84
sq mi land
Standard
ZIP type
Central (CT)
timezone
62351 ZIP code map
Cities in ZIP code 62351
Below are the cities the US Postal Service accepts for ZIP code 62351. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Mendon | Acceptable |
| Mendon | Preferred |
Nearby ZIP codes
62349 Loraine (4.1 mi)
62376 Ursa (8.2 mi)
62338 Fowler (8.6 mi)
62380 West Point (9.1 mi)
62320 Camp Point (11.6 mi)
62339 Golden (13.3 mi)
62305 Quincy (13.3 mi)
62379 Warsaw (14.1 mi)
62316 Bowen (14.2 mi)
62313 Basco (14.3 mi)
62301 Quincy (14.4 mi)
62346 La Prairie (15.7 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 1,934 |
| Population density | 27 / sq mi |
| State FIPS | 17 |
| County FIPS | 001 |
| Geography | |
|---|---|
| Land area | 72.84 sq mi |
| Water area | 0.34 sq mi |
| Latitude | 40.1105 |
| Longitude | -91.2596 |
| Timezone | Central (CT) |
| Area code | 217 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 32.2% | 45.1% | 37.2% |
| $50k – $100k | 39.6% | 33.2% | 29.6% |
| $100k – $200k | 22.2% | 17.6% | 24.4% |
| Over $200k | 6.0% | 4.1% | 8.8% |
Demographics & statistics
1,934
Population
27
People per sq mi
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
52
Under 5
54
92
5–9
94
83
10–14
86
35
15–19
36
64
20–24
65
107
25–34
109
126
35–44
129
118
45–54
121
56
55–59
58
41
60–64
42
122
65–74
126
40
75–84
42
18
85+
18
← 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
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 32.2% | 45.1% | 37.2% |
| $50k – $100k | 39.6% | 33.2% | 29.6% |
| $100k – $200k | 22.2% | 17.6% | 24.4% |
| Over $200k | 6.0% | 4.1% | 8.8% |
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% |
| Work from home | 3.1% |
| 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 | % |
|---|---|
| Obesity | 32.1% |
| High blood pressure | 35.0% |
| High cholesterol | 33.5% |
| Diabetes | 9.7% |
| 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 | % |
|---|---|
| Smoking | 16.9% |
| Binge drinking | 15.4% |
| No physical activity | 24.4% |
| Less than 7 hrs sleep | 30.4% |
| Depression | 17.1% |
| 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% |
| No insurance | 2.1% |
| 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 about ZIP code 62351
What city is ZIP code 62351 in?
ZIP code 62351 is primarily assigned to Mendon, Illinois.
What county is ZIP code 62351 in?
ZIP code 62351 falls within Adams County, Illinois.
Is ZIP code 62351 mostly owner-occupied?
88% of occupied units in ZIP code 62351 are owner-occupied, well above the national average.
What is the typical home value in ZIP code 62351?
The median home value in ZIP code 62351 is $145,600.
What is the population of ZIP code 62351?
ZIP code 62351 has an estimated population of 1,934 residents, with a density of 27 people per square mile.
What is the median household income in ZIP code 62351?
The median household income in ZIP code 62351 is $76,071, above the national median of ~$75,000.
What timezone is ZIP code 62351 in?
ZIP code 62351 observes the CST timezone.