Knoxville ZIP Codes — Knox County, IL

There is one unique ZIP code in Knoxville, Illinois and it is 61448. Area code: 309.

ZIP codes

40.91

sq mi land

0.00

sq mi water

309

area code

Knoxville, IL ZIP code map

About Knoxville, IL

Knoxville, Illinois, is a small and charming city known for its friendly community and rich history. Located in Knox County, this city offers a peaceful environment with a close-knit population. Residents enjoy the balance of rural charm and convenient access to nearby urban amenities.

Location & geography

Knoxville is situated in the central part of Illinois, approximately 25 miles southwest of Peoria and 15 miles northwest of Galesburg. The city covers a total land area of 40.91 square miles, with no water areas, making it predominantly landlocked. The surrounding terrain consists of flat, agricultural land typical of the Midwest, providing a picturesque backdrop for residents and visitors alike.

Community & economy

The community in Knoxville is characterized by its strong sense of togetherness and a commitment to local development. The economy traditionally revolves around agriculture and small local businesses, creating a unique blend of industries that support daily life. Community events and local gatherings play a significant role in social life, fostering interaction among residents.

Transportation

Knoxville is conveniently accessible via Illinois Route 40, which connects it to nearby cities and major highways. The nearest airport is the General Wayne A. Downing Peoria International Airport, located approximately 30 miles to the southeast. Public transportation options are limited, with most residents relying on personal vehicles for commuting.

History

Knoxville was founded in the early 19th century and has since developed a rich agricultural heritage that continues to influence its economy today. Over the years, it has served as a regional hub for local farming activities and small businesses. The city has seen various notable events, including agricultural fairs that highlight its connections to farming and rural culture.

Did you know?

A surprising fact about Knoxville is that it maintains a small-town feel despite being located near larger cities. Additionally, the city has historical significance as a trading post during the westward expansion of the United States.

ZIP codes for Knoxville, IL (1)

ZIP code	City	County	Map
61448	Knoxville	Knox	View map

Demographics & statistics

4,076

Population

42.8

Median age

$73,295

Median household income

$30,065

Per capita income

$132,800

Median home value

$688

Median monthly rent

85.4%

Home ownership

8.2%

Poverty rate

3.8%

Unemployment

1,418

Housing units

23.4%

Bachelor's or higher

Age distribution

Male Female

134

Under 5

170

128

5–9

163

118

10–14

150

138

15–19

174

20–24

152

25–34

192

216

35–44

275

214

45–54

271

111

55–59

141

60–64

122

245

65–74

311

138

75–84

175

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,052	25.8%
18 and over	3,024	74.2%
65 and over	983	24.1%
Median age	42.8 years

Race & ethnicity

White 96.9%

Two or more races 2.4%

Black or African American 0.4%

Asian 0.3%

Group	Count	%
White	3,951	96.9%
Two or more races	98	2.4%
Black or African American	15	0.4%
Asian	12	0.3%

Household income

Under $10k 8.3%

$10k–$15k 2.9%

$15k–$25k 10.3%

$25k–$35k 2.7%

$35k–$50k 11.1%

$50k–$75k 15.7%

$75k–$100k 18.9%

$100k–$150k 20.1%

$150k–$200k 5.7%

$200k+ 4.3%

Range	% of households
Under $10k	8.3%
$10k–$15k	2.9%
$15k–$25k	10.3%
$25k–$35k	2.7%
$35k–$50k	11.1%
$50k–$75k	15.7%
$75k–$100k	18.9%
$100k–$150k	20.1%
$150k–$200k	5.7%
$200k+	4.3%
Median income	$73,295

Housing

Home values

Under $50k 5.7%

$50k–$100k 27.8%

$100k–$150k 26.8%

$150k–$200k 19.6%

$200k–$300k 10.9%

$300k–$500k 7.1%

$500k–$1M 1.2%

$1M+ 1.0%

Housing overview

Metric	Value
Median home value	$132,800
Median rent / month	$688
Owner occupied	85.4%
Renter occupied	14.6%
Vacant	4.7%
Single-family detached	88.4%
Large apartment buildings	1.8%
Mobile homes	2.2%
Median rooms	6.5
Avg household size (owned)	2.38

Year built

Era	%
2020 or later	0.0%
2010–2019	3.4%
2000–2009	5.2%
1990–1999	7.1%
1980–1989	3.3%
1970–1979	32.3%
1960–1969	6.5%
1950–1959	13.7%
1940–1949	2.2%
1939 or earlier	26.4%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	5.6%
2 bedrooms	18.1%
3 bedrooms	46.7%
4 bedrooms	21.8%
5+ bedrooms	6.0%

Vehicles per household

Vehicles	% of households
No vehicle	3.5%
1 vehicle	33.2%
2 vehicles	33.6%
3 or more	29.7%

Heating fuel

Fuel type	%
Utility gas	72.3%
Electricity	13.6%
Propane / LP gas	8.3%
Fuel oil	0.5%
Wood	5.3%

Households & families

Household type	Count	%
Married-couple family	820	52.2%
Cohabiting couple	62	3.9%
Male householder, no spouse	183	11.7%
Female householder, no spouse	505	32.2%
Households with children under 18	482	30.7%
Households with seniors (65+)	588	37.5%
Average household size	2.49

Marital status

Status	Male	Female
Never married	25.7%	23.6%
Married	59.9%	48.1%
Separated	2.1%	2.7%
Widowed	3.7%	9.4%
Divorced	8.6%	16.2%

Education

Less than 9th grade 0.4%

Some HS, no diploma 3.3%

HS graduate 39.7%

Some college, no degree 19.6%

Associate's degree 13.6%

Bachelor's degree 18.6%

Graduate / professional 4.8%

Metric	%
HS diploma or higher	96.3%
Bachelor's or higher	23.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	83	9.0%
Kindergarten	46	5.0%
Elementary school	495	53.8%
High school	235	25.5%
College / grad school	61	6.6%

Employment

Industry of employment

Education & healthcare 26.8%

Retail trade 11.0%

Transportation & utilities 11.0%

Arts, food & hospitality 8.6%

Manufacturing 7.5%

Construction 7.0%

Professional & management 6.7%

Public administration 6.4%

Finance & real estate 4.8%

Other services 4.6%

Agriculture & mining 2.1%

Wholesale trade 1.8%

Information 1.7%

Occupation

Category	%
Management, business & arts	36.9%
Service	15.6%
Sales & office	17.1%
Natural resources & construction	14.6%
Production & transportation	15.8%

Employment type

Type	%
Private sector	78.8%
Government	17.9%
Self-employed	2.6%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	87.8%
Carpool	6.3%
Public transit	0.0%
Walk	0.0%
Other means	0.5%
Avg commute (minutes)	21.8

Poverty

All people 8.2%

Under 18 years 5.8%

18 and over 9.0%

Married-couple families 3.3%

Female-led households 19.3%

Income support

Source	% of households
Social Security	34.8%
Retirement income	24.6%
Supplemental Security	4.5%
Cash public assistance	0.4%
Food stamps / SNAP	14.8%

Health indicators

Condition	%
High blood pressure	37.2%
High cholesterol	36.4%
Heart disease	8.3%
Stroke	3.9%
Asthma	10.1%
Arthritis	31.9%
Kidney disease	3.5%
Pulmonary disease	9.1%
Cancer	8.2%

Behavior / access	%
Binge drinking	13.7%
No physical activity	27.2%
Less than 7 hrs sleep	33.5%
Fair or poor health	16.5%
Poor mental health	12.9%
Poor physical health	11.6%
No health insurance	10.3%
Visited doctor (checkup)	77.7%
Visited dentist	61.5%
Cholesterol screening	90.4%
Teeth loss	15.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	239	7.9%

Disability	%
Any disability	8.5%
Under 18	2.7%
18–64 years	6.9%
65 and over	19.7%

Health insurance coverage

Type	%
Private insurance	71.1%
Public insurance	41.9%
Uninsured under 19	3.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,772	92.5%
Spanish	17	0.5%
Other Indo-European	17	0.5%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,067	99.8%
Born in same state	4,043	99.2%
Born in different state	3,541	86.9%
Foreign born	24	0.6%
Naturalized citizen	9	0.2%
Not a US citizen	9	100.0%

Ancestry

Ancestry	Count	%
French	667	16.4%
Italian	532	13.1%
Arab	271	6.6%

Ancestry	Count	%
Polish	55	1.3%
English	47	1.2%
Irish	3	0.1%

Technology access

Metric	% of households
Computer access	38.5%
Internet access	91.5%

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

Frequently asked questions

What ZIP codes does Knoxville, IL have?

Knoxville, IL has one ZIP code: 61448. Each ZIP code serves a distinct delivery area within the city and surrounding region.