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 2026 population of 171. Williamson is currently declining at a rate of -0.58% annually and its population has decreased by -5% since the most recent census, which recorded a population of 180 in 2020.

The median household income in Williamson is $57,841 with a poverty rate of 19.61%. The median age in Williamson is 51 years: 49.8 years for males, and 51.8 years for females. For every 100 females there are 88.2 males.

171
Total Population
146
Density (mi²)
-1 -0.58%
Growth

Williamson Population

Williamson Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026171-1-0.58%
2025172-2-1.15%
2024174-1-0.57%
2023175-3-1.69%
2022178-1-0.56%
2021179-1-0.56%
202018000%
2019215-2-0.92%
2018217-1-0.46%
2017218-1-0.46%
2016219-1-0.45%
2015220-1-0.45%
2014221-1-0.45%
2013222-3-1.33%
2012225-2-0.88%
2011227-3-1.3%
201022800%

Median Age

Overall: 51 years
Female: 51.8 years
Male: 49.8 years

Williamson Adults

There are 138 adults, (40 of whom are seniors) in Williamson.

Sex Ratio

Female: 85 (53.1%)
Male: 75 (46.9%)

Demographics

The racial composition of Williamson includes 91.25% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White14691.25%
Two or more races148.75%
Race
Population ↓
Percentage (of total)
Two or more races53.13%
White31.88%
Race
Population ↓
Percentage (of total)
White14389.38%
Two or more races95.63%

Williamson Marital Status

Economics and Income Statistics

Williamson 's average per capita income is $38,333. Household income levels show a median of $57,841. The poverty rate stands at 19.61%.

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$101,250-
Households$57,841$63,896
Families$56,250$71,738
Non Families$45,250$51,017

$38,333

Average Income

$57,841

Median Household Income

19.61%

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)