Williamsfield ZIP Codes — Knox County, IL

There is one unique ZIP code in Williamsfield, Illinois and it is 61489. Area code: 309.
1
ZIP codes
47.07
sq mi land
0.12
sq mi water
309
area code
Williamsfield, IL ZIP code map

About Williamsfield, IL

Williamsfield, Illinois, is a small, charming village located in Knox County. Known for its friendly community vibe and rural landscape, it offers residents a tranquil lifestyle surrounded by the natural beauty of the area. With its rich agricultural roots and a close-knit community, Williamsfield exemplifies the quintessential small-town experience in the heart of the Midwest.

Location & geography

Situated in the western part of Illinois, Williamsfield is approximately 25 miles northeast of Galesburg and 18 miles southwest of Kewanee. The village covers a total land area of 47.07 square miles, with a minor water area of 0.12 square miles. The terrain is primarily flat and rural, making it ideal for various agricultural pursuits.

Community & economy

The character of Williamsfield is defined by its strong sense of community and agricultural heritage. Local industries primarily revolve around farming, contributing to the area's economy and lifestyle. Daily life in Williamsfield is marked by community events and gatherings, where residents enjoy the simple pleasures and shared connections that small-town living offers.

Transportation

Williamsfield is accessible via several local roads that connect to larger highways, facilitating travel to neighboring cities. The nearest major routes provide access to Galesburg and Kewanee, while the closest airport is the General Wayne Downing Peoria International Airport, located about 40 miles to the southeast. Public transit options are limited, emphasizing the village's rural charm.

History

Founded in the mid-19th century, Williamsfield has a rich history tied to agriculture and small-scale industry. Its development was spurred by the arrival of the railroad, which facilitated trade and growth in the area. Over the years, the village has maintained its agricultural roots, playing a vital role in the local economy.

Did you know?

A little-known fact about Williamsfield is that it hosts an annual community fair, which celebrates the agricultural heritage of the area and draws visitors from surrounding communities. Additionally, the village is renowned for its picturesque landscapes and abundant natural beauty, making it a hidden gem in Illinois.

ZIP codes for Williamsfield, IL (1)
ZIP code City County Map
61489 Williamsfield Knox View map

Demographics & statistics

841
Population
39.0
Median age
$80,455
Median household income
$41,331
Per capita income
$108,200
Median home value
$588
Median monthly rent
93.8%
Home ownership
5.9%
Poverty rate
1.2%
Unemployment
400
Housing units
22.8%
Bachelor's or higher

Age distribution

Male Female
29
Under 5
29
11
5–9
10
32
10–14
32
46
15–19
45
14
20–24
13
52
25–34
50
49
35–44
48
58
45–54
57
12
55–59
11
35
60–64
34
72
65–74
69
15
75–84
14
2
85+
2
← Male
Female →

Age summary

GroupCount%
Under 1823027.3%
18 and over61172.7%
65 and over17420.7%
Median age39.0 years

Race & ethnicity

White 88.6%
Black or African American 9.4%
Two or more races 1.4%
Asian 0.6%
GroupCount%
White74588.6%
Black or African American799.4%
Two or more races121.4%
Asian50.6%

Household income

Under $10k 2.7%
$10k–$15k 1.5%
$15k–$25k 7.7%
$25k–$35k 3.6%
$35k–$50k 8.9%
$50k–$75k 22.5%
$75k–$100k 20.7%
$100k–$150k 20.7%
$150k–$200k 2.4%
$200k+ 9.5%
Range% of households
Under $10k2.7%
$10k–$15k1.5%
$15k–$25k7.7%
$25k–$35k3.6%
$35k–$50k8.9%
$50k–$75k22.5%
$75k–$100k20.7%
$100k–$150k20.7%
$150k–$200k2.4%
$200k+9.5%
Median income$80,455

Housing

Home values

Under $50k 13.9%
$50k–$100k 33.1%
$100k–$150k 16.7%
$150k–$200k 16.1%
$200k–$300k 14.2%
$300k–$500k 6.0%

Housing overview

MetricValue
Median home value$108,200
Median rent / month$588
Owner occupied93.8%
Renter occupied6.2%
Vacant19.7%
Single-family detached97.6%
Large apartment buildings0.0%
Mobile homes2.4%
Median rooms6.4
Avg household size (owned)2.50

Year built

Era%
2020 or later0.0%
2010–20196.9%
2000–200914.7%
1990–19994.3%
1980–19893.8%
1970–197914.0%
1960–19695.2%
1950–19599.7%
1940–19493.8%
1939 or earlier37.5%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom5.2%
2 bedrooms28.3%
3 bedrooms42.5%
4 bedrooms18.8%
5+ bedrooms5.2%

Vehicles per household

Vehicles% of households
No vehicle1.2%
1 vehicle20.7%
2 vehicles51.8%
3 or more26.3%

Heating fuel

Fuel type%
Utility gas52.1%
Electricity11.8%
Propane / LP gas24.9%
Wood8.0%
No fuel used3.3%

Households & families

Household typeCount%
Married-couple family21764.2%
Cohabiting couple154.4%
Male householder, no spouse5616.6%
Female householder, no spouse5014.8%
Households with children under 1810029.6%
Households with seniors (65+)12436.7%
Average household size2.46

Marital status

StatusMaleFemale
Never married24.1%27.6%
Married63.4%59.1%
Separated0.0%0.0%
Widowed0.9%6.6%
Divorced11.6%6.6%

Education

Less than 9th grade 0.7%
Some HS, no diploma 3.3%
HS graduate 35.7%
Some college, no degree 24.5%
Associate's degree 13.1%
Bachelor's degree 19.5%
Graduate / professional 3.3%
Metric%
HS diploma or higher96.0%
Bachelor's or higher22.8%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool115.7%
Kindergarten00.0%
Elementary school4422.8%
High school12866.3%
College / grad school105.2%

Employment

Industry of employment

Education & healthcare 26.8%
Manufacturing 17.1%
Agriculture & mining 10.8%
Professional & management 7.5%
Wholesale trade 7.0%
Retail trade 6.8%
Construction 5.6%
Finance & real estate 5.6%
Transportation & utilities 4.7%
Other services 2.8%
Public administration 2.6%
Information 1.4%
Arts, food & hospitality 1.2%

Occupation

Category%
Management, business & arts45.5%
Service12.9%
Sales & office17.8%
Natural resources & construction4.7%
Production & transportation19.0%

Employment type

Type%
Private sector73.9%
Government12.2%
Self-employed13.8%
Unpaid family workers0.0%

Commute

Method%
Drive alone83.8%
Carpool3.9%
Public transit0.0%
Walk5.8%
Other means0.0%
Avg commute (minutes)24.0

Poverty

All people 5.9%
Under 18 years 0.0%
18 and over 8.2%
Married-couple families 3.7%
Female-led households 15.8%

Income support

Source% of households
Social Security36.1%
Retirement income30.2%
Supplemental Security1.5%
Cash public assistance0.9%
Food stamps / SNAP7.7%

Health indicators

Condition%
High blood pressure35.7%
High cholesterol36.7%
Heart disease7.6%
Stroke3.5%
Asthma9.7%
Arthritis30.3%
Kidney disease3.2%
Pulmonary disease8.2%
Cancer8.0%
Behavior / access%
Binge drinking14.4%
No physical activity25.5%
Less than 7 hrs sleep33.5%
Fair or poor health14.8%
Poor mental health12.5%
Poor physical health10.7%
No health insurance10.1%
Visited doctor (checkup)77.0%
Visited dentist63.7%
Cholesterol screening90.7%
Teeth loss14.2%

Veterans & disability

VeteransCount%
Civilian veterans315.1%
Disability%
Any disability14.1%
Under 1810.9%
18–64 years8.5%
65 and over32.8%

Health insurance coverage

Type%
Private insurance78.1%
Public insurance35.4%
Uninsured under 193.9%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only78393.1%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)83198.8%
Born in same state83198.8%
Born in different state75489.7%
Foreign born00.0%
Naturalized citizen101.2%
Not a US citizen550.0%

Ancestry

AncestryCount%
Arab12114.4%
French10312.2%
Italian313.7%
AncestryCount%
Dutch121.4%
English81%
Polish40.5%

Technology access

Metric% of households
Computer access40.2%
Internet access92.6%

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

Frequently asked questions
What ZIP codes does Williamsfield, IL have?
Williamsfield, IL has one ZIP code: 61489. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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