61489 ZIP Code — Williamsfield, IL

Knox County, Illinois

ZIP code 61489 is located in Williamsfield, Illinois, within Knox County. It covers approximately 47.07 square miles and serves a population of 841 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61489

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $108,200. Owner-occupancy is high at 94%, well above the national average.

Median household income is $80,455. The poverty rate of 6% is below the national average. 36% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Overall, ZIP code 61489 reflects a community defined by high homeownership and a significant Social Security-dependent population.

841

population

47.07

sq mi land

Standard

ZIP type

Central (CT)

timezone

61489 ZIP code map

Cities in ZIP code 61489

Below are the cities the US Postal Service accepts for ZIP code 61489. Using any city not on this list may result in mail delivery delays.

City	Status
Williamsfield	Preferred

Nearby ZIP codes

61428 Dahinda (4.4 mi) 61485 Victoria (4.7 mi) 61451 Laura (5.5 mi) 61436 Gilson (10.6 mi) 61448 Knoxville (10.6 mi) 61572 Yates City (10.8 mi) 61449 La Fayette (12 mi) 61529 Elmwood (12.3 mi) 61414 Altona (12.4 mi) 61517 Brimfield (12.6 mi) 61559 Princeville (13.2 mi) 61467 Oneida (14 mi)

Demographics updated 05/2026

Population
Total population	841
Population density	18 / sq mi
State FIPS	17
County FIPS	095

Geography
Land area	47.07 sq mi
Water area	0.12 sq mi
Latitude	40.9417
Longitude	-90.0329
Timezone	Central (CT)
Area code	309

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.9%	54.0%	37.2%
$50k – $100k	36.8%	29.8%	29.6%
$100k – $200k	19.4%	14.2%	24.4%
Over $200k	8.0%	2.0%	8.8%

Demographics & statistics

841

Population

People per sq mi

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

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	230	27.3%
18 and over	611	72.7%
65 and over	174	20.7%
Median age	39.0 years

Race & ethnicity

White 88.6%

Black or African American 9.4%

Two or more races 1.4%

Asian 0.6%

Group	Count	%
White	745	88.6%
Black or African American	79	9.4%
Two or more races	12	1.4%
Asian	5	0.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.9%	54.0%	37.2%
$50k – $100k	36.8%	29.8%	29.6%
$100k – $200k	19.4%	14.2%	24.4%
Over $200k	8.0%	2.0%	8.8%

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 $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%
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

Metric	Value
Median home value	$108,200
Median rent / month	$588
Owner occupied	93.8%
Renter occupied	6.2%
Vacant	19.7%
Single-family detached	97.6%
Large apartment buildings	0.0%
Mobile homes	2.4%
Median rooms	6.4
Avg household size (owned)	2.50

Year built

Era	%
2020 or later	0.0%
2010–2019	6.9%
2000–2009	14.7%
1990–1999	4.3%
1980–1989	3.8%
1970–1979	14.0%
1960–1969	5.2%
1950–1959	9.7%
1940–1949	3.8%
1939 or earlier	37.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.2%
2 bedrooms	28.3%
3 bedrooms	42.5%
4 bedrooms	18.8%
5+ bedrooms	5.2%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	20.7%
2 vehicles	51.8%
3 or more	26.3%

Heating fuel

Fuel type	%
Utility gas	52.1%
Electricity	11.8%
Propane / LP gas	24.9%
Wood	8.0%
No fuel used	3.3%

Households & families

Household type	Count	%
Married-couple family	217	64.2%
Cohabiting couple	15	4.4%
Male householder, no spouse	56	16.6%
Female householder, no spouse	50	14.8%
Households with children under 18	100	29.6%
Households with seniors (65+)	124	36.7%
Average household size	2.46

Marital status

Status	Male	Female
Never married	24.1%	27.6%
Married	63.4%	59.1%
Separated	0.0%	0.0%
Widowed	0.9%	6.6%
Divorced	11.6%	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 higher	96.0%
Bachelor's or higher	22.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	11	5.7%
Kindergarten	0	0.0%
Elementary school	44	22.8%
High school	128	66.3%
College / grad school	10	5.2%

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 & arts	45.5%
Service	12.9%
Sales & office	17.8%
Natural resources & construction	4.7%
Production & transportation	19.0%

Employment type

Type	%
Private sector	73.9%
Government	12.2%
Self-employed	13.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.8%
Carpool	3.9%
Public transit	0.0%
Walk	5.8%
Work from home	6.5%
Other means	0.0%
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 Security	36.1%
Retirement income	30.2%
Supplemental Security	1.5%
Cash public assistance	0.9%
Food stamps / SNAP	7.7%

Health indicators

Condition	%
Obesity	35.4%
High blood pressure	35.7%
High cholesterol	36.7%
Diabetes	11.0%
Heart disease	7.6%
Stroke	3.5%
Asthma	9.7%
Arthritis	30.3%
Kidney disease	3.2%
Pulmonary disease	8.2%
Cancer	8.0%

Behavior / access	%
Smoking	19.1%
Binge drinking	14.4%
No physical activity	25.5%
Less than 7 hrs sleep	33.5%
Depression	17.8%
Fair or poor health	14.8%
Poor mental health	12.5%
Poor physical health	10.7%
No health insurance	10.1%
Visited doctor (checkup)	77.0%
Visited dentist	63.7%
Cholesterol screening	90.7%
Teeth loss	14.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	31	5.1%

Disability	%
Any disability	14.1%
Under 18	10.9%
18–64 years	8.5%
65 and over	32.8%

Health insurance coverage

Type	%
Private insurance	78.1%
Public insurance	35.4%
No insurance	2.1%
Uninsured under 19	3.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	783	93.1%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	831	98.8%
Born in same state	831	98.8%
Born in different state	754	89.7%
Foreign born	0	0.0%
Naturalized citizen	10	1.2%
Not a US citizen	5	50.0%

Ancestry

Ancestry	Count	%
Arab	121	14.4%
French	103	12.2%
Italian	31	3.7%

Ancestry	Count	%
Dutch	12	1.4%
English	8	1%
Polish	4	0.5%

Technology access

Metric	% of households
Computer access	40.2%
Internet access	92.6%

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

Frequently asked questions about ZIP code 61489

What city is ZIP code 61489 in?

ZIP code 61489 is primarily assigned to Williamsfield, Illinois.

What county is ZIP code 61489 in?

ZIP code 61489 falls within Knox County, Illinois.

Is ZIP code 61489 mostly owner-occupied?

94% of occupied units in ZIP code 61489 are owner-occupied, well above the national average.

Does ZIP code 61489 have a large retiree population?

36% of households in ZIP code 61489 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 61489?

The median home value in ZIP code 61489 is $108,200.

What is the population of ZIP code 61489?

ZIP code 61489 has an estimated population of 841 residents, with a density of 18 people per square mile.

What timezone is ZIP code 61489 in?

ZIP code 61489 observes the CST timezone.