PlainZIP

Mendon, IL · standard

ZIP Code 62351

Adams County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

1,856
10/sq mi
$77,298
Median income
$147,800
Median home value
20.4%
Bachelor's or higher

The verdict

Mendon pairs an above-median household income with below-median home values, in a rural, homeowner-dominated area.

Top 42%
household income, US ZIPs
25th pct
home value, US ZIPs
10
people per sq mi
87%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 62351 against every reporting US ZIP.

ZIP code 62351 covers 191.3 square miles in Mendon, Adams County, Illinois (a standard USPS delivery area), with a modest 1,856 residents on file, a density of 10 people per square mile, in the Chicago time zone.

ZIP 62351 lands in the middle-income range, with a median household income of $77,298 (3% below the Illinois average), while per-capita income is $37,871. The poverty rate stands at 9.7% and the unemployment rate at 3.4%. On housing, the median home value is $147,800 (23% below the state average) with median rent at $667 per month, and 86.6% of occupied units are owner-occupied.

Educational attainment sits below the national norm: 20.4% of adults hold a bachelor's degree or higher, the median age is 39.9, and the average commute is -. A geography-based comparison follows: 7 ZIP codes within about 10 miles of 62351, plus 6 more within Adams County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 62351

Top 5 sectors by establishment count in Mendon, IL

Which industries have the most business establishments in ZIP 62351.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 62351, Mendon, IL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

1,856

Population

191.3

Area (sq mi)

10

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 62351?

39.9

Median Age

48.5%

Male

51.5%

Female

0.1%

Foreign-Born

White 97.7%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 1.7%
Hispanic or Latino 0.6%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$77,298

Median Household Income

-3% vs state

$37,871

Per Capita Income

9.7%

Poverty Rate

3.4%

Unemployment Rate

How ZIP 62351 ranks nationally

Mendon, IL household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$77,298 Top 42% higher than 58% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 59.3%
Bachelor's Degree or Higher 20.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

823

Total Housing Units

759

Occupied Units

64

Vacant Units

2.49

Avg Household Size

Occupancy Type

Owner 86.6%
Renter 13.4%

$147,800

Median Home Value

-23% vs state

$667

Median Rent

1970

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 35 business establishments in ZIP 62351, employing approximately 204 people with a combined annual payroll of $9,202,000.

35

Businesses

204

Employees

$9.2M

Annual Payroll

6

Industry Sectors

Industry Establishments % of Total
Other services (except public administration) 8 22.9%
Construction 6 17.1%
Retail trade 6 17.1%
Wholesale trade 3 8.6%
Finance and insurance 3 8.6%
Accommodation and food services 3 8.6%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 62351 vs 62349 →

ZIP 62351 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 62351 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 62351 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 62351 ranks #4 of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
62349 Loraine, IL 636 5.0 mi
62359 Paloma, IL 166 6.6 mi
62338 Fowler, IL 1,473 8.7 mi
62325 Coatsburg, IL 403 7.0 mi
62348 Lima, IL 170 7.2 mi
62373 Sutter, IL 300 9.6 mi
62380 West Point, IL 401 9.5 mi

More ZIP Codes in Adams County

62301 standard
Quincy, IL
Pop: 33,758
62305 standard
Quincy, IL
Pop: 18,052
62347 standard
Liberty, IL
Pop: 2,282
62320 standard
Camp Point, IL
Pop: 2,185
62360 standard
Payson, IL
Pop: 1,656
62338 standard
Fowler, IL
Pop: 1,473

Related Areas

Adams County Mendon, IL Illinois

Frequently Asked Questions

What county is ZIP code 62351 in? ▼
ZIP code 62351 (Mendon) is located in Adams County, Illinois. Adams County contains multiple ZIP codes, see the full list at /counties/adams-il.
What is the population of ZIP code 62351? ▼
ZIP code 62351 in Mendon, IL has a population of 1,856 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 62351? ▼
The median household income in ZIP 62351 is $77,298, which is 1% above the national average of $76,288.
What is the average home value in ZIP 62351? ▼
The median home value in ZIP 62351 is $147,800, which is 47% below the national average of $278,155.
What is the demographic makeup of ZIP 62351? ▼
The largest racial group in ZIP 62351 is White at 97.7%. Hispanic or Latino residents make up 0.6% of the population.
How many businesses are in ZIP code 62351? ▼
ZIP code 62351 has 35 business establishments employing approximately 204 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 62351? ▼
The top industries by establishment count in ZIP 62351 are: Other services (except public administration) (8), Construction (6), Retail trade (6). There are 6 industry sectors represented in total.
What is the education level in ZIP code 62351? ▼
In ZIP code 62351, 59.3% of residents aged 25+ have a high school diploma or higher, and 20.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 62351? ▼
In ZIP code 62351, approximately 86.6% of occupied housing units are owner-occupied and 13.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 62351? ▼
The poverty rate in ZIP code 62351 is 9.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.