Johnston City ZIP Codes — Williamson County, IL

There is one unique ZIP code in Johnston City, Illinois and it is 62951. Area code: 618.

ZIP codes

27.67

sq mi land

0.70

sq mi water

618

area code

Johnston City, IL ZIP code map

About Johnston City, IL

Johnston City, Illinois, is a small but vibrant city located in the southern part of the state. Known for its close-knit community and local charm, Johnston City offers a unique glimpse into rural Midwestern living. With its rich history and picturesque surroundings, it's a great place to visit or settle down.

Location & geography

Johnston City is situated within Williamson County, positioned conveniently near the larger cities of Carbondale, Marion, Herrin, and Energy, making it well-connected to urban amenities. The city covers a total area of 27.67 square miles, with 0.70 square miles consisting of water, adding to its scenic landscapes. The terrain includes a mix of flat regions and gentle hills typical of southern Illinois.

Community & economy

The character of Johnston City is defined by its friendly residents and community-oriented activities. The local economy features a mix of industries, including small businesses and agricultural efforts that contribute to the vibrant daily life. Residents enjoy various recreational activities, fostering a sense of community through events and local gatherings.

Transportation

Transportation in Johnston City is accessible via key highways, including U.S. Route 62 and Interstate 57, which provide connectivity to nearby cities and regions. For air travel, the nearest major airport is Southern Illinois Airport, located approximately 15 miles away in Carbondale. Public transportation options are limited, making personal vehicles the primary mode of transit for residents.

History

Johnston City was founded in the late 19th century and has historical roots in coal mining, which significantly shaped its development and community identity. Notably, the city played a key role in the coal industry during the early 20th century, attracting workers and families seeking economic opportunities. Over the years, Johnston City has maintained its cultural heritage while adapting to changing economic landscapes.

Did you know?

A surprising fact about Johnston City is that it was once known for its significant coal mining operations, which were a powerhouse for the region's economy. Additionally, the city hosts the cooperative community effort known as Johnston City Community Park, which features recreational facilities for residents.

ZIP codes for Johnston City, IL (1)

ZIP code	City	County	Map
62951	Johnston City	Williamson	View map

Demographics & statistics

5,574

Population

49.0

Median age

$54,120

Median household income

$30,042

Per capita income

$86,700

Median home value

$741

Median monthly rent

81.8%

Home ownership

14.6%

Poverty rate

5.6%

Unemployment

2,137

Housing units

19.6%

Bachelor's or higher

Age distribution

Male Female

115

Under 5

5–9

211

10–14

178

157

15–19

132

264

20–24

222

245

25–34

206

314

35–44

265

483

45–54

408

309

55–59

261

278

60–64

234

301

65–74

254

165

75–84

140

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,007	18.1%
18 and over	4,567	81.9%
65 and over	1,012	18.2%
Median age	49.0 years

Race & ethnicity

White 92.8%

Two or more races 2.6%

Asian 2.2%

Hispanic or Latino 1.3%

Other race 0.7%

American Indian / Alaska Native 0.2%

Black or African American 0.1%

Group	Count	%
White	5,242	92.8%
Two or more races	147	2.6%
Asian	124	2.2%
Hispanic or Latino	73	1.3%
Other race	42	0.7%
American Indian / Alaska Native	12	0.2%
Black or African American	7	0.1%

Household income

Under $10k 7.1%

$10k–$15k 1.4%

$15k–$25k 5.7%

$25k–$35k 10.2%

$35k–$50k 22.2%

$50k–$75k 13.8%

$75k–$100k 15.2%

$100k–$150k 19.6%

$150k–$200k 2.1%

$200k+ 2.7%

Range	% of households
Under $10k	7.1%
$10k–$15k	1.4%
$15k–$25k	5.7%
$25k–$35k	10.2%
$35k–$50k	22.2%
$50k–$75k	13.8%
$75k–$100k	15.2%
$100k–$150k	19.6%
$150k–$200k	2.1%
$200k+	2.7%
Median income	$54,120

Housing

Home values

Under $50k 20.1%

$50k–$100k 39.3%

$100k–$150k 21.4%

$150k–$200k 9.4%

$200k–$300k 3.5%

$300k–$500k 4.2%

$500k–$1M 1.7%

$1M+ 0.4%

Housing overview

Metric	Value
Median home value	$86,700
Median rent / month	$741
Owner occupied	81.8%
Renter occupied	18.2%
Vacant	8.4%
Single-family detached	80.7%
Large apartment buildings	1.1%
Mobile homes	4.9%
Median rooms	5.9
Avg household size (owned)	2.45

Year built

Era	%
2020 or later	0.0%
2010–2019	3.0%
2000–2009	5.5%
1990–1999	12.1%
1980–1989	12.9%
1970–1979	12.4%
1960–1969	9.3%
1950–1959	8.3%
1940–1949	3.5%
1939 or earlier	33.0%

Bedrooms

Size	% of units
No bedroom (studio)	5.6%
1 bedroom	4.3%
2 bedrooms	25.0%
3 bedrooms	46.4%
4 bedrooms	14.4%
5+ bedrooms	4.4%

Vehicles per household

Vehicles	% of households
No vehicle	4.1%
1 vehicle	32.1%
2 vehicles	43.2%
3 or more	20.6%

Heating fuel

Fuel type	%
Utility gas	29.9%
Electricity	59.5%
Propane / LP gas	10.2%
Fuel oil	0.3%

Households & families

Household type	Count	%
Married-couple family	1,166	49.6%
Cohabiting couple	16	0.7%
Male householder, no spouse	706	30.1%
Female householder, no spouse	461	19.6%
Households with children under 18	540	23.0%
Households with seniors (65+)	755	32.1%
Average household size	2.36

Marital status

Status	Male	Female
Never married	29.1%	19.8%
Married	45.6%	55.6%
Separated	1.7%	5.4%
Widowed	3.6%	6.6%
Divorced	20.0%	12.6%

Education

Less than 9th grade 1.6%

Some HS, no diploma 6.0%

HS graduate 31.0%

Some college, no degree 26.5%

Associate's degree 15.3%

Bachelor's degree 11.5%

Graduate / professional 8.1%

Metric	%
HS diploma or higher	92.4%
Bachelor's or higher	19.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	29	2.8%
Kindergarten	26	2.5%
Elementary school	529	50.6%
High school	268	25.6%
College / grad school	193	18.5%

Employment

Industry of employment

Education & healthcare 31.1%

Retail trade 15.5%

Manufacturing 8.7%

Finance & real estate 8.6%

Transportation & utilities 8.2%

Professional & management 8.2%

Arts, food & hospitality 6.6%

Agriculture & mining 5.0%

Public administration 3.9%

Construction 3.4%

Wholesale trade 0.8%

Occupation

Category	%
Management, business & arts	31.7%
Service	21.7%
Sales & office	19.4%
Natural resources & construction	12.1%
Production & transportation	15.0%

Employment type

Type	%
Private sector	81.1%
Government	15.4%
Self-employed	3.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	87.2%
Carpool	10.0%
Public transit	0.9%
Walk	0.0%
Other means	0.0%
Avg commute (minutes)	18.1

Poverty

All people 14.6%

Under 18 years 30.2%

18 and over 11.4%

Married-couple families 4.3%

Female-led households 7.2%

Income support

Source	% of households
Social Security	36.7%
Retirement income	32.5%
Supplemental Security	2.1%
Cash public assistance	4.1%
Food stamps / SNAP	18.4%

Health indicators

Condition	%
High blood pressure	34.1%
High cholesterol	33.3%
Heart disease	6.7%
Stroke	3.1%
Asthma	9.8%
Arthritis	27.3%
Kidney disease	2.9%
Pulmonary disease	7.4%
Cancer	7.2%

Behavior / access	%
Binge drinking	15.2%
No physical activity	24.4%
Less than 7 hrs sleep	31.2%
Fair or poor health	14.0%
Poor mental health	13.1%
Poor physical health	10.1%
No health insurance	10.4%
Visited doctor (checkup)	76.8%
Visited dentist	65.1%
Cholesterol screening	89.6%
Teeth loss	14.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	408	8.9%

Disability	%
Any disability	23.1%
Under 18	13.1%
18–64 years	17.9%
65 and over	51.1%

Health insurance coverage

Type	%
Private insurance	59.7%
Public insurance	50.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,362	96.2%
Spanish	41	0.8%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	41	0.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	5,477	98.3%
Born in same state	5,477	98.3%
Born in different state	3,995	71.7%
Foreign born	0	0.0%
Naturalized citizen	97	1.7%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	918	16.5%
Italian	729	13.1%
Arab	621	11.1%

Ancestry	Count	%
English	159	2.9%
Polish	36	0.6%
Irish	17	0.3%

Technology access

Metric	% of households
Computer access	42.1%
Internet access	88.4%

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

Frequently asked questions

What ZIP codes does Johnston City, IL have?

Johnston City, IL has one ZIP code: 62951. Each ZIP code serves a distinct delivery area within the city and surrounding region.