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Illiopolis, IL

Village in Sangamon County, Illinois. ZIP codes: 62539.

Population

890

Land area

0.7sq mi

People per sq mi

1,314

ZIP codes

1

Illiopolis and its ZIP codes

Full map

Illiopolis at a glance

  • Illiopolis is about 5.7 times as dense as Illinois as a whole.
  • The median household income is $63,125, 24% below the Illinois median of $83,390.
  • A typical owner-occupied home is valued at $100,800 (62% below Illinois) and median rent is $663 a month.

Local data for Illiopolis, IL

Counts from official public data

Housing and community stats

Illiopolis, IL, American Community Survey 2020-2024

Full profile

Median household income

$63,125

Poverty rate

6.0%

Median home value

$100,800

Median rent

$663/mo

Homeownership

81.0%

Bachelor's or higher

20.0%

Median age

43.3

Average commute

22.9 min

Largest reported origins and ancestries: German Americans (134), Irish Americans (130), Italian Americans (21).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Sangamon County. PPP loans are for Illiopolis.

Details

Unemployment rate

3.8%

Aug 2026, -0.9 pts in a year

Average annual pay

$72,668

130,936 jobs, 2025

Income per person

$63,581

BEA, 2024

Federal spending

$3.3B

FY 2026, $16,718 per person

PPP loans

$797K

49 loans, 96 jobs reported

Sangamon County economyFederal spendingPPP loans

How people get to work

Illiopolis, IL, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone77.6%
  • Carpooled4.5%
  • Public transit0.0%
  • Walked8.3%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other1.3%
  • Worked from home8.3%

Average one-way commute: 22.9 minutes for people who do not work from home.

Environment and hazard risk

Illiopolis, IL, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: tornado

Storm events since 1996

947

Countywide, mostly thunderstorm wind

Flood insurance policies

167

0.2% of homes, county

July high / Jan low

85° / 20°F

40.4 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Illiopolis, IL, CDC PLACES estimates

All 40 measures

Obesity

38.2%

U.S. 33.3% +4.9 pts

Diabetes

10.3%

U.S. 12.1% -1.8 pts

Smoking

13.5%

U.S. 12.8% +0.7 pts

Uninsured (18-64)

6.2%

U.S. 11.1% -4.9 pts

ZIP codes in Illiopolis

1 in or overlapping Illiopolis. Population shown

·

Cities near Illiopolis

NameDistanceLand area (sq mi)
NianticVillage5 mi1
Mount AuburnVillage5.8 mi1
BuffaloVillage7.9 mi0.3
MechanicsburgVillage8 mi1
LathamVillage9.7 mi0.3
CornlandCensus-designated place9.7 mi0.1
DawsonVillage11 mi0.8
HarristownVillage11 mi1.8
Mount PulaskiCity11 mi1.1
WarrensburgVillage12 mi0.7
Blue MoundVillage13 mi0.6
BoodyCensus-designated place13 mi1.2
RivertonVillage15 mi3.2
ChestnutCensus-designated place15 mi0.1
SpauldingVillage15 mi0.8
EdinburgVillage15 mi0.6

Frequently asked questions

What county is Illiopolis, IL in?
Illiopolis is in Sangamon County, Illinois.
What ZIP codes are in Illiopolis, IL?
ZIP codes in or overlapping Illiopolis include 62539.
What is the population of Illiopolis, IL?
About 890 people live in Illiopolis, based on American Community Survey 5-year estimates.
What cities are near Illiopolis?
Nearby places include Niantic (5 mi), Mount Auburn (5.8 mi), Buffalo (7.9 mi), Mechanicsburg (8 mi), Latham (9.7 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023