Williamsfield Flag

Williamsfield

County:
Knox County
County Seat:
No
Area (mi²):
1.231
State:
Illinois

Williamsfield is a village located in Knox County, Illinois. Williamsfield has a 2026 population of 550. Williamsfield is currently declining at a rate of -0.54% annually and its population has decreased by -3.51% since the most recent census, which recorded a population of 570 in 2020.

The median household income in Williamsfield is $82,417 with a poverty rate of 3.95%. The median age in Williamsfield is 44.6 years: 44.1 years for males, and 46.5 years for females. For every 100 females there are 105.8 males.

550
Total Population
447
Density (mi²)
-3 -0.54%
Growth

Williamsfield Population

Williamsfield Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026550-3-0.54%
2025553-4-0.72%
202455710.18%
2023556-2-0.36%
2022558-7-1.24%
2021565-5-0.88%
2020570-2-0.35%
2019545-3-0.55%
2018548-7-1.26%
2017555-3-0.54%
2016558-5-0.89%
2015563-4-0.71%
2014567-3-0.53%
2013570-2-0.35%
2012572-2-0.35%
2011574-4-0.69%
201057800%

Median Age

Overall: 44.6 years
Female: 46.5 years
Male: 44.1 years

Williamsfield Adults

There are 424 adults, (107 of whom are seniors) in Williamsfield.

Sex Ratio

Female: 258 (48.6%)
Male: 273 (51.4%)

Demographics

The racial composition of Williamsfield includes 86.06% White, 8.66% Black or African American, 3.2% Asian, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White45786.06%
Black or African American468.66%
Asian173.2%
Two or more races112.07%
Race
Population ↓
Percentage (of total)
Two or more races71.32%
Race
Population ↓
Percentage (of total)
White45786.06%
Black or African American468.66%
Asian173.2%
Two or more races40.75%

Williamsfield Marital Status

Economics and Income Statistics

Williamsfield 's average per capita income is $58,304. Household income levels show a median of $82,417. The poverty rate stands at 3.95%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$92,188-
Families$86,429$122,854
Households$82,417$106,367
Non Families$51,875$55,629

$58,304

Average Income

$82,417

Median Household Income

3.95%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)