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Williamsfield, IL

Village in Knox County, Illinois. ZIP codes: 61489.

Population

531

Land area

1.2sq mi

People per sq mi

431

ZIP codes

1

Williamsfield and its ZIP codes

Full map

Williamsfield at a glance

  • Williamsfield is 89% denser than Illinois as a whole.
  • The median household income is $82,417, close to the Illinois median.
  • A typical owner-occupied home is valued at $109,800 (58% below Illinois) and median rent is $617 a month.

Local data for Williamsfield, IL

Counts from official public data

Housing and community stats

Williamsfield, IL, American Community Survey 2020-2024

Full profile

Median household income

$82,417

Poverty rate

4.0%

Median home value

$109,800

Median rent

$617/mo

Homeownership

94.1%

Bachelor's or higher

19.5%

Median age

44.6

Average commute

22.4 min

Largest reported origins and ancestries: German Americans (53), Irish Americans (29), Chinese Americans (16).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Knox County. PPP loans are for Williamsfield.

Details

Unemployment rate

4.3%

Sep 2026, -1.0 pts in a year

Average annual pay

$49,451

17,188 jobs, 2025

Income per person

$51,995

BEA, 2024

Federal spending

$351M

FY 2026, $7,027 per person

PPP loans

$1.2M

48 loans, 141 jobs reported

Knox County economyFederal spendingPPP loans

How people get to work

Williamsfield, IL, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone89.6%
  • Carpooled1.1%
  • Public transit0.0%
  • Walked4.8%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.0%
  • Worked from home4.5%

Average one-way commute: 22.4 minutes for people who do not work from home.

Environment and hazard risk

Williamsfield, IL, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: strong wind

Storm events since 1996

476

Countywide, mostly thunderstorm wind

Flood insurance policies

29

0.1% of homes, county

July high / Jan low

86° / 15°F

38.8 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Williamsfield, IL, CDC PLACES estimates

All 40 measures

Obesity

37.5%

U.S. 33.3% +4.2 pts

Diabetes

11.2%

U.S. 12.1% -0.9 pts

Smoking

15.2%

U.S. 12.8% +2.4 pts

Uninsured (18-64)

7.4%

U.S. 11.1% -3.7 pts

ZIP codes in Williamsfield

1 in or overlapping Williamsfield. Population shown

·

Cities near Williamsfield

NameDistanceLand area (sq mi)
Oak RunCensus-designated place6.6 mi4.3
VictoriaVillage8 mi0.5
BrimfieldVillage9.1 mi0.9
Yates CityVillage10 mi0.5
ElmwoodCity10 mi1.4
GilsonCensus-designated place10 mi0.3
MaquonVillage12 mi0.2
La FayetteVillage13 mi0.2
KnoxvilleCity14 mi2.3
PrincevilleVillage14 mi1.7
ToulonCity14 mi1
OneidaCity15 mi0.8
WatagaVillage15 mi0.8
AltonaVillage15 mi0.9
East GalesburgVillage15 mi1.4
FarmingtonCity16 mi1.5

Frequently asked questions

What county is Williamsfield, IL in?
Williamsfield is in Knox County, Illinois.
What ZIP codes are in Williamsfield, IL?
ZIP codes in or overlapping Williamsfield include 61489.
What is the population of Williamsfield, IL?
About 531 people live in Williamsfield, based on American Community Survey 5-year estimates.
What cities are near Williamsfield?
Nearby places include Oak Run (6.6 mi), Victoria (8 mi), Brimfield (9.1 mi), Yates City (10 mi), Elmwood (10 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023