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Southern side of courthouse square in Sullivan

SullivanIL

A town of 4,348, settled in 1845. Nearly 4.3% of it is conserved land.

Photo: Nyttend · Public domain
Population
4,348
−0.6% since 2010
Median home value
$103K
Census ACS
Household income
$63K
median
Median age
38.1
years
Jobs based here
2,618
Balanced

What makes Sullivan stand out

The 3 things Sullivan does most differently from other towns.

Picked automatically from the data

Sullivan’s report card

See the data ↓

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The data

Ordered by what stands out in Sullivan. Another town gets a different order.

Outdoors

4.3% of Sullivan is conserved land

1.2 miles of trails across 2 parks and preserves.

#303for trails in IL
4.3%
conserved · 76 of 1,771 acres
1.2 mi
of trails · 0.4 per sq mi
#353
most conserved land in IL
#47
most walkable in IL
Biggest places to walkTrailsAcres
1. Tabor Park1.2 mi34
2. Wyman Park—47
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-USParks & trails →
Work & commute

About one in three working residents works right in Sullivan

About one in 3 of Sullivan’s working residents works in town. The top destinations are Arthur (6%), Decatur (6%) and Mattoon (6%). Half commute less than 17 miles.

30%work in town

Where working residents work

In Sullivan30%
Arthur6%
Decatur6%
Mattoon6%
Bloomington3%
17 mi
median commute distance
2,618
jobs based in Sullivan
Balanced
jobs vs. working residents
Census LEHD 2023 · ACSCommute map →
Safety

Less crime per resident than 94% of U.S. towns

Sullivan reports less crime per resident than 94% of the U.S. towns and cities we grade.

ASafety Grade

Violent crime per 1,000 residents

Sullivan0.9
Illinois2.6
U.S.3.3

Property crime per 1,000 residents

Sullivan0.2
Illinois15.6
U.S.15.5
94th
percentile among U.S. towns we grade
89th
percentile among IL towns
4
violent crimes reported in 2025
1
property crimes reported in 2025
FBI crime data, 2025 · crimes reported to policeFull safety report →
Natural hazards

High risk, with inland flooding at the top

Expected storm and flood damage is higher than in 70% of U.S. communities.

70risk score of 100
FEMA risk score
70High riskLowerHigher
Inland floodingCold wavesEarthquakes
2
paid flood claims since 1979
4
federal disasters paid out here
FEMA National Risk Index · OpenFEMANatural hazards →
Climate

Four seasons, pleasant summers

Sullivan has chilly winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 20°, and about 13 inches of snow falls in a normal winter.

13″snow a winter

Typical low → high °F

Winter23–38°
Spring43–63°
Summer64–85°
Fall44–66°
Oct 22
typical first frost
Apr 15
typical last frost
+1.0°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020Full climate →
Health

Healthier than 51% of U.S. towns

Sullivan beats the Illinois average on 3 of 32 CDC measures and trails it on 5.

B−Health Grade
32 measures vs. Illinois
3 better24 too close to call5 worse
What stands outSullivanIL
Fewer uninsured adults7.8%9.9%
Fewer adults facing housing insecurity10.5%13.2%
More adults with COPD8.2%6.3%
Hshs Good Shepherd Hospital
16.8 mi away · emergency room
2 of 3
care shortages: dental, mental health
43rd
percentile among IL towns
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSAFull health report →
Agri-Fab Building
2011 · Agri-Fab Building · Wikimedia Commons
Sullivan’s story

181 years in pictures

4 postcards, papers and photographs from public archives, and 1 places on the National Register.

Moultrie County Courthouse, western side from southSouthern side of courthouse square inMoultrie County Courthouse
Explore the history →

About Sullivan

City in Illinois, United States

Official town website ↗

Sullivan is the largest city and the county seat of Moultrie County, Illinois, United States. The population was 4,413 at the time of the 2020 census. Sullivan is named after Sullivan's Island, South Carolina, where Fort Moultrie is located.

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

Established
1845
Population
4,413
Area
2.7 sq mi
Elevation
673 ft
ZIP code
61951
Area code
217

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Photo of Sullivan

Sullivan, IL · Photo: Nyttend · Public domain · Source ↗