Swansea Flag

Swansea

County Seat:
No
Area (mi²):
6.477
State:
Illinois

Swansea is a village located in St. Clair County, Illinois. Swansea has a 2025 population of 14,445 . Swansea is currently declining at a rate of -0.56% annually but its population has increased by 0.64% since the most recent census, which recorded a population of 14,353 in 2020.

The median household income in Swansea is $84,367 with a poverty rate of 8.34%. The median age in Swansea is 38.4 years: 37.4 years for males, and 40.7 years for females. For every 100 females there are 92.1 males.

14.4K
Total Population
2,230
Density (mi²)
-81 -0.56%
Growth

Swansea Population

Swansea Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Swansea includes 72.47% White, 17.7% Black or African American, and smaller percentages for Asian and multiracial populations.

Population by Race

White (72.47%)

Black or African American (17.7%)

Two or more races (7.46%)

Asian (2.37%)

Race
Population
Percentage (of total)
White10,58372.47%
Black or African American2,58517.7%
Two or more races1,0897.46%
Asian3462.37%

Swansea Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Swansea's average per capita income is $53,285. Household income levels show a median of $84,367. The poverty rate stands at 8.34%.

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$122,070-
Families$106,907$140,859
Households$84,367$113,284
Non Families$47,500$57,194

$53,285

Average Income

$84,367

Median Household Income

8.34%

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)