Williamson Flag

Williamson

County:
Macoupin County
County Seat:
No
Area (mi²):
1.171
State:
Illinois

Williamson is a village located in Macoupin County, Illinois. Williamson has a 2025 population of 174. Williamson is currently declining at a rate of -0.57% annually and its population has decreased by -3.87% since the most recent census, which recorded a population of 181 in 2020.

The average household income in Williamson is $62,997 with a poverty rate of 17.09%.The median age in Williamson is 55 years: 54.5 years for males, and 60.1 years for females.

174
Total Population
149
Density (mi²)
-1 -0.57%
Growth

Williamson Population

Williamson Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Williamson includes 95.12% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White15695.12%
Two or more races84.88%

Williamson Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Williamson's average per capita income is $34,167. Household income levels show a median of $56,667. The poverty rate stands at 17.09%.

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$86,250-
Families$57,083$72,343
Households$56,667$62,997
Non Families-$42,576

$34,167

Average Income

$56,667

Median Household Income

17.09%

Poverty Rate

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)