Lewis Round Barn - Adams County Fairgronds, 2012
Mendon’s story
189 years in pictures
The archive holds 3 old photos and papers going back to 2012.
- 1837Mendon is settled
MendonIL
Photo: Robb01 · CC BY-SA 3.0
Population
844
2025 Census estimate · −3.1% since 2020
Typical home
$207K
+11.4% in a year
Household income
$66K
median
Median age
37.6
years
Jobs based here
231
A commuter town
Is Mendon a good place to live?
Mendon’s average trip to work is 20 minutes, below both the Illinois town median (26 minutes) and the median of U.S. towns (25 minutes). Mendon has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
What makes Mendon stand out
Where Mendon beats most towns.
Small town
844 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Nearby towns
Getting set up
The full setup list →Moving to Mendon: who provides what
Who provides power, water and the rest in Mendon, and how to reach them.
PowerAmeren Illinois Company16.7¢/kWh · EIA 2025HIFLD · EIA
WaterMendon water systemNo health-based violations in 5 years · EPAEPA
Internet3 providers100% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Mendon’s trash rules yet
Register to voteOnlineIn Illinois you can register online until 16 days before Election Day, in person up to and including Election Day, or by mail (postmarked 28 days before).vote.govWho runs elections hereAdams County ClerkAdams County; contacts on the Handbook page.FVAP, Jun 2025
ZIP code6235162351 100%Census 2020
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
The data
Ordered by what stands out in Mendon.
Work & commute
About two in five of Mendon’s working residents commute to Quincy
Most working residents leave Mendon for work: only 5% work in town. 16% of Mendon residents live below the poverty line, where Illinois’ towns sit at 8.4% and U.S. towns at 9.6%. Jobs based in Mendon fell to 231 in 2023, 69 fewer than in 2013.
5%work in town
| Mendon | Illinois towns | U.S. towns | |
|---|---|---|---|
| Below the poverty line | 16% | 8.4% | 9.6% |
| Median household income | $66,000 | $83,000 | $80,000 |
| Working residents who work in town | 5.4% | 8.3% | 8% |
Where working residents work
In Mendon5%
Quincy42%
Ellington Township13%
Melrose Township3%
Mount Sterling3%
12 mi
median commute distance
231
jobs based in Mendon
A commuter town
jobs vs. working residents
Census LEHD 2023 · ACS
Housing
Homes in Mendon are worth about $207K, by Zillow’s estimate
The typical Mendon home is worth about $207,000, up 11.4% in a year, 30% below the Illinois typical home.
$207KZillow home value
Typical home value
Mendon$207K
Illinois$296K
+11.4%
value change, 1 year
1
homes sold in April
Zillow Home Value Index · Redfin Data Center
Climate
Four seasons and pleasant summers in Mendon
Mendon has chilly winters and warm summers. July afternoons reach 86°, January nights drop to 18° and about 23 inches of snow falls in a winter.
23″snow a winter
Typical low → high °F
Winter21–38°
Spring42–63°
Summer64–84°
Fall45–65°
Oct 23
typical first frost
Apr 14
typical last frost
+0.6°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020
Health
More of Mendon’s adults have been diagnosed with depression than in the typical Illinois or U.S. town
24% of Mendon adults have been diagnosed with depression. Mendon beats the Illinois average on 3 of 32 CDC measures and trails it on 2. 10% of Mendon adults have diabetes.
| Mendon | Illinois towns | U.S. towns | |
|---|---|---|---|
| Binge drink (CDC PLACES) | 20% | 18% | 16% |
| Frequent mental distress (CDC PLACES) | 18% | 17% | 17% |
| Depression (CDC PLACES) | 24% | 22% | 23% |
| Yearly checkup (CDC PLACES) | 77% | 78% | 79% |
32 measures vs. Illinois
3 better27 too close to call2 worse
| What stands out | Mendon | IL |
|---|---|---|
| Fewer uninsured adults | 7.1% | 9.9% |
| Fewer adults facing food insecurity | 12.5% | 15.9% |
| More adults with depression | 24.3% | 19.8% |
Blessing Hospital
12.2 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Natural hazards
Moderate risk in Mendon, with inland flooding at the top
Expected storm and flood damage is higher than in 58% of U.S. communities.
58risk score of 100
FEMA risk score
Inland floodingDroughtCold waves
1
federal disasters paid out here
FEMA National Risk Index · OpenFEMA
0%conserved
0%
conserved · 0 of 547 acres
0.0 mi
of trails · 0 per sq mi
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Chittenden Park | — | 4 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Keep exploring
Everything we know about Mendon
18pages on Mendon
The big questions
Out and about
The story
After high school
Colleges nearby
4 within 15 miles of the center of Mendon
Blessing Rieman College of Nursing and Health SciencesUniversity or college · Private nonprofit · Quincy10.4 miQuincy UniversityUniversity or college · Private nonprofit · Quincy11.7 mi$37,140 tuitionJohn Wood Community CollegeCommunity college · Public · Quincy12.4 mi$5,700 in-state tuition
About 2 of every 100 Mendon residents are enrolled in college, against 6 across Illinois.
A commuter town
95% of working residents leave Mendon for work
Where Mendon’s working residents go each day. Line width shows the share.
231jobs based in Mendon
5%of working residents work in town
12 mimedian commute distance
Census LEHD 2023
About Mendon
Village in Illinois, US
Mendon is a village in Adams County, Illinois, United States. The population was 872 at the 2020 census. It is part of the Quincy, IL–MO Micropolitan Statistical Area. The village is named after Mendon, Massachusetts.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 0.9 sq mi
- ZIP code
- 62351
Questions about Mendon
Short answers, built from the data on this page.
Is Mendon, IL a good place to live?
Mendon has fewer than 1,000 residents, too few for fair grades; the figures below are still real.