Williams Flag

Williams

County:
Sangamon County
County Seat:
No
Area (mi²):
42.782
State:
Illinois

Williams is located in Sangamon County, Illinois. Williams has a 2025 population of 3,392. Williams is currently declining at a rate of -0.24% annually and its population has decreased by -1.6% since the most recent census, which recorded a population of 3,447 in 2020.

The average household income in Williams is $154,209 with a poverty rate of 3.32%. The median age in Williams is 41.2 years: 36.6 years for males, and 44.2 years for females.

3.4K
Total Population
79
Density (mi²)
-8 -0.24%
Growth

Williams Population

Williams Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Williams includes 94.74% White, and smaller percentages for Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White (94.7%)

Two or more races (4.0%)

Black or African American (0.7%)

Asian (0.4%)

Native Hawaiian or Pacific Islander (0.2%)

Race
Population
Percentage (of total)
White3,24294.74%
Two or more races1363.97%
Black or African American250.73%
Asian130.38%
Native Hawaiian or Pacific Islander60.18%

Williams Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Williams' average per capita income is $62,614. Household income levels show a median of $129,531. The poverty rate stands at 3.32%.

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$147,961-
Families$140,391$176,512
Households$129,531$154,209
Non Families$43,013$73,890

$62,614

Average Income

$129,531

Median Household Income

3.32%

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)