Illiopolis ZIP Code List — Sangamon County, IL

There is one unique ZIP code in Illiopolis, Illinois and it is 62539. Area code: 217.

ZIP codes

46.36

sq mi land

0.00

sq mi water

217

area code

Illiopolis, IL ZIP code map

About Illiopolis, IL

Illiopolis, Illinois, is a small yet charming town located in Sangamon County. Nestled within the central part of the state, Illiopolis offers a unique blend of rural tranquility and community spirit. Residents enjoy a peaceful lifestyle while being part of a close-knit community that values tradition and neighborly connections.

Location & geography

Illiopolis is situated approximately 14 miles northeast of Springfield, the capital of Illinois, and about 18 miles southwest of Decatur. The town covers a total land area of 46.36 square miles, featuring primarily flat terrain typical of the Central Illinois region. With no water area recorded, Illiopolis is characterized by its expansive land and open spaces.

Community & economy

The community of Illiopolis is known for its warm and welcoming atmosphere, where locals take pride in their small-town values. Agriculture plays a key role in the local economy, with many residents engaged in farming and related industries. Daily life in Illiopolis is characterized by a strong sense of community, with various local events and gatherings fostering social bonds among residents.

Transportation

Illiopolis is easily accessible via several highways, including Interstate 72, which connects the town to larger cities and commerce routes. The nearest major airport is the Abraham Lincoln Capital Airport in Springfield, offering regional flights. Public transportation options may be limited, but local residents often rely on personal vehicles for commuting.

History

Illiopolis was founded in the early 19th century, growing primarily due to its agricultural roots in the surrounding fertile land. Over the years, the town has seen developments that focused on farming and local industry, contributing to its steady growth. Notable events in its history include the establishment of community organizations and local celebrations that highlight its agricultural heritage.

Did you know?

A little-known fact about Illiopolis is that the town's name is derived from a combination of 'Illinois' and 'opolis,' which means 'city' in Greek. This unique name reflects the town's identity within the state of Illinois, showcasing its connection to both local and cultural histories.

ZIP codes for Illiopolis, IL (1)

ZIP code	City	County	Map
62539	Illiopolis	Sangamon	View map

Demographics & statistics

1,151

Population

42.4

Median age

$83,542

Median household income

$34,396

Per capita income

$97,000

Median home value

$698

Median monthly rent

83.2%

Home ownership

9.3%

Poverty rate

4.1%

Unemployment

442

Housing units

20.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	279	24.2%
18 and over	872	75.8%
65 and over	261	22.7%
Median age	42.4 years

Race & ethnicity

White 96.4%

Two or more races 2.8%

Black or African American 0.3%

Hispanic or Latino 0.3%

Asian 0.3%

Group	Count	%
White	1,112	96.4%
Two or more races	32	2.8%
Black or African American	4	0.3%
Hispanic or Latino	3	0.3%
Asian	3	0.3%

Household income

Under $10k 3.6%

$10k–$15k 10.3%

$15k–$25k 5.5%

$25k–$35k 5.9%

$35k–$50k 10.7%

$50k–$75k 9.5%

$75k–$100k 17.9%

$100k–$150k 26.9%

$150k–$200k 5.3%

$200k+ 4.6%

Range	% of households
Under $10k	3.6%
$10k–$15k	10.3%
$15k–$25k	5.5%
$25k–$35k	5.9%
$35k–$50k	10.7%
$50k–$75k	9.5%
$75k–$100k	17.9%
$100k–$150k	26.9%
$150k–$200k	5.3%
$200k+	4.6%
Median income	$83,542

Housing

Home values

Under $50k 16.2%

$50k–$100k 36.4%

$100k–$150k 16.4%

$150k–$200k 14.1%

$200k–$300k 10.9%

$300k–$500k 4.0%

$1M+ 2.0%

Housing overview

Metric	Value
Median home value	$97,000
Median rent / month	$698
Owner occupied	83.2%
Renter occupied	16.8%
Vacant	8.8%
Single-family detached	80.7%
Large apartment buildings	0.0%
Mobile homes	10.2%
Median rooms	6.2
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	0.4%
2000–2009	2.9%
1990–1999	8.6%
1980–1989	5.7%
1970–1979	23.4%
1960–1969	5.4%
1950–1959	12.3%
1940–1949	16.9%
1939 or earlier	24.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	11.7%
2 bedrooms	16.5%
3 bedrooms	48.1%
4 bedrooms	19.7%
5+ bedrooms	4.0%

Vehicles per household

Vehicles	% of households
No vehicle	3.4%
1 vehicle	27.9%
2 vehicles	34.7%
3 or more	34.0%

Heating fuel

Fuel type	%
Utility gas	68.9%
Electricity	10.5%
Propane / LP gas	20.6%

Households & families

Household type	Count	%
Married-couple family	283	59.5%
Cohabiting couple	14	2.9%
Male householder, no spouse	68	14.3%
Female householder, no spouse	111	23.3%
Households with children under 18	133	27.9%
Households with seniors (65+)	190	39.9%
Average household size	2.42

Marital status

Status	Male	Female
Never married	18.5%	14.3%
Married	69.2%	62.4%
Separated	0.5%	0.4%
Widowed	4.8%	7.9%
Divorced	7.1%	15.0%

Education

Less than 9th grade 1.8%

Some HS, no diploma 3.5%

HS graduate 50.2%

Some college, no degree 14.6%

Associate's degree 9.9%

Bachelor's degree 15.2%

Graduate / professional 4.7%

Metric	%
HS diploma or higher	94.6%
Bachelor's or higher	20.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	31	13.4%
Kindergarten	22	9.5%
Elementary school	105	45.5%
High school	45	19.5%
College / grad school	28	12.1%

Employment

Industry of employment

Education & healthcare 16.9%

Manufacturing 15.8%

Retail trade 11.4%

Agriculture & mining 9.2%

Finance & real estate 8.4%

Arts, food & hospitality 8.3%

Other services 6.2%

Public administration 5.8%

Construction 4.3%

Wholesale trade 4.1%

Transportation & utilities 4.1%

Professional & management 3.4%

Information 2.1%

Occupation

Category	%
Management, business & arts	35.6%
Service	15.6%
Sales & office	21.2%
Natural resources & construction	8.1%
Production & transportation	19.5%

Employment type

Type	%
Private sector	78.4%
Government	14.8%
Self-employed	6.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	86.0%
Carpool	3.1%
Public transit	0.0%
Walk	5.0%
Other means	1.0%
Avg commute (minutes)	23.5

Poverty

All people 9.3%

Under 18 years 7.9%

18 and over 9.7%

Married-couple families 2.8%

Female-led households 0.0%

Income support

Source	% of households
Social Security	38.7%
Retirement income	33.4%
Supplemental Security	9.2%
Cash public assistance	1.5%
Food stamps / SNAP	14.1%

Health indicators

Condition	%
High blood pressure	33.3%
High cholesterol	32.7%
Heart disease	6.0%
Stroke	2.8%
Asthma	9.5%
Arthritis	25.9%
Kidney disease	2.6%
Pulmonary disease	6.9%
Cancer	6.7%

Behavior / access	%
Binge drinking	16.0%
No physical activity	23.6%
Less than 7 hrs sleep	28.8%
Fair or poor health	13.1%
Poor mental health	12.8%
Poor physical health	9.6%
No health insurance	10.3%
Visited doctor (checkup)	75.6%
Visited dentist	65.3%
Cholesterol screening	89.7%
Teeth loss	13.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	100	11.5%

Disability	%
Any disability	18.8%
Under 18	12.5%
18–64 years	10.8%
65 and over	44.1%

Health insurance coverage

Type	%
Private insurance	79.8%
Public insurance	33.9%
Uninsured under 19	0.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,047	91.0%
Spanish	5	0.5%
Other Indo-European	0	0.0%
Asian & Pacific Islander	5	0.5%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,145	99.5%
Born in same state	1,144	99.4%
Born in different state	1,000	86.9%
Foreign born	1	0.1%
Naturalized citizen	6	0.5%
Not a US citizen	2	33.3%

Ancestry

Ancestry	Count	%
French	175	15.2%
Italian	126	10.9%
Arab	54	4.7%

Ancestry	Count	%
English	16	1.4%
Irish	2	0.2%

Technology access

Metric	% of households
Computer access	41.4%
Internet access	95.2%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Illiopolis, IL?

Illiopolis, IL has one ZIP code: 62539.

What is the main ZIP code for Illiopolis, IL?

The primary ZIP code for Illiopolis, IL is 62539. The city uses area code 217 for phone service.

What county is Illiopolis, IL in?

Illiopolis is located in Sangamon County, Illinois.

How many ZIP codes are in Illiopolis, IL?

Illiopolis, IL has 1 ZIP code.

What is the ZIP code for downtown Illiopolis and the surrounding business district?

Downtown Illiopolis and its central business district are located in ZIP code 62539, which serves as the primary commercial and civic hub of this Sangamon County community.

What ZIP code should I use for mailing to addresses in Illiopolis?

All residential and business addresses in Illiopolis use the single ZIP code 62539, which covers the entire incorporated city limits.