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Janesville Illinois Wesleyan Church
Illinois›Coles County
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JanesvilleIL

A town of 39, settled in 1879.

2 bordering townsMap →
Photo: Djmaschek · CC BY 4.0
Photo of Janesville

Janesville, IL · Photo: Djmaschek · CC BY 4.0 · Source ↗

Population
39
Census survey, 2020–24
Median age
50.1
years

Is Janesville a good place to live?

No town among the 769 in Illinois we compare has a higher share of households owning their home than Janesville. Janesville has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

39 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Pleasant Grove Township · 2 miCottonwood Township · 2 miLerna · 4 miSumpter Township · 7 miToledo · 7 miLafayette Township · 7 mi
Pleasant Grove TownshipCottonwood TownshipPleasant Grove TownshipCottonwood TownshipJanesville
Getting set up

Moving to Janesville: who provides what

Janesville is unincorporated, so Coles County and regional agencies provide most services.

PowerAmeren Illinois Company16.7¢/kWh · EIA 2025HIFLD · EIA
Internet4 providers100% of addresses get 100/20 MbpsFCC
Trash & county servicesColes CountyColes County provides services here
SchoolsCharleston Community Unit School District 1Which school depends on your addressNCES
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.gov
Who runs elections hereColes County ClerkColes County; contacts on the Handbook page.FVAP, Jun 2025
ZIP code6244062440 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 Janesville.

Natural hazards

Inland flooding leads a high hazard risk in Janesville

Expected storm and flood damage is higher than in 71% of U.S. communities.

71risk score of 100
FEMA risk score
71High riskLowerHigher
Inland floodingDroughtTornadoes
Full pageJanesville’s hazards pageOpen the page
What it facesHigh riskFlood claims0 paid flood claims · No paid flood claims on recordPast disasters7 disaster declarations · Declared for the countyGet ready1.7 events a year, on average · Ready for inland flooding

FEMA National Risk Index · OpenFEMA

Climate

Four seasons and pleasant summers in Janesville

Janesville has chilly winters and warm summers. July afternoons reach 86°, January nights drop to 20° and about 15 inches of snow falls in a winter.

15″snow a winter

Typical low → high °F

Winter23–39°
Spring43–64°
Summer64–85°
Fall45–66°
Oct 24
typical first frost
Apr 15
typical last frost
+1.0°
vs. the 20th-century average
Full pageJanesville’s climate pageOpen the page
A year of weatherJuly highs 86°, January lows 20°Rain & snow15″ of snow a winter · 42 inches of rain and snow a yearHeating & coolingMostly a heating billThen and now+1.0° vs. the 20th century · Warmer than the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Janesville is

Janesville beats the Illinois average on 4 of 32 CDC measures and trails it on 2. 21% of adults binge drink in Janesville, above both the Illinois town median (18%) and the median of U.S. towns (16%). 31% of adults feel lonely in Janesville.

JanesvilleIllinois townsU.S. towns
Binge drink (CDC PLACES)21%18%16%
Feel lonely (CDC PLACES)31%33%33%
Smoke cigarettes (CDC PLACES)16%13%14%
Obesity (CDC PLACES)39%37%35%
32 measures vs. Illinois
4 better26 too close to call2 worse
What stands outJanesvilleIL
Fewer adults facing food insecurity11.1%15.9%
Fewer adults facing housing insecurity9.6%13.2%
More smokers16.2%12.1%
Sarah Bush Lincoln Health Center
8 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health
Full pageJanesville’s health reportOpen the page
Everyday habitsMore smokersHospitals & doctors nearby8 miles to an ER · Sarah Bush Lincoln Health CenterHow adults are doingFewer lonely adultsEvery CDC estimateBetter than IL on 4 of 32

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

Keep exploring

Everything we know about Janesville

12pages on Janesville
The big questions
HealthBetter than IL on 4 of 32 CDC measuresNatural hazardsFEMA risk higher than 71% of U.S. communities · inland flooding
Out and about
PlacesLibrarySumpter Township LibraryCollegesLake Land College is 7.8 mi away
The story
HistorySettled 1879Climate86° summer highs · 15″ of snow
Day to day
NewsWeatherHandbookTown SquareNeighbors
After high school

Colleges nearby

2 within 15 miles of the center of Janesville

Lake Land CollegeCommunity college · Public · Mattoon7.8 mi$4,415 in-state tuitionEastern Illinois UniversityUniversity or college · Public · Charleston8.1 mi$13,679 in-state tuition

About 0 of every 100 Janesville residents are enrolled in college, against 6 across Illinois.

Prices by family income, graduation and earnings →

About Janesville

Unincorporated community and Census-designated place in Illinois, United States

Janesville is a Census-designated place in Coles and Cumberland counties, Illinois, United States. As of the 2020 census, Janesville had a population of 76. Janesville is 7 miles (11 km) north of Toledo. Janesville has a post office with the ZIP Code 62435.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Elevation
689 ft

Questions about Janesville

Short answers, built from the data on this page.

Is Janesville, IL a good place to live?

Janesville has fewer than 1,000 residents, too few for fair grades; the figures below are still real.