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 2026 population of 14,491. Swansea is currently growing at a rate of 0.16% annually and its population has increased by 0.96% since the most recent census, which recorded a population of 14,353 in 2020.

The median household income in Swansea is $91,587 with a poverty rate of 8.69%. The median age in Swansea is 42.3 years: 41.5 years for males, and 42.5 years for females. For every 100 females there are 91.8 males.

14.5K
Total Population
2,237
Density (mi²)
23 0.16%
Growth

Swansea Population

Swansea Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202614,491230.16%
202514,468230.16%
202414,445-81-0.56%
202314,5264112.91%
202214,115-108-0.76%
202114,223-159-1.11%
202014,3531,0007.49%
201913,353-108-0.8%
201813,461-58-0.43%
201713,519-34-0.25%
201613,553-23-0.17%
201513,576-82-0.6%
201413,658-58-0.42%
201313,716-47-0.34%
201213,763430.31%
201113,7201320.97%
201013,5881581.18%
200010,5792,37829%
19908,2012,85453.38%
19805,347-85-1.56%
19705,4322,41479.99%
19603,01800%

Median Age

Overall: 42.3 years
Female: 42.5 years
Male: 41.5 years

Swansea Adults

There are 11,302 adults, (2,699 of whom are seniors) in Swansea.

Sex Ratio

Female: 7,669 (52.1%)
Male: 7,041 (47.9%)

Demographics

The racial composition of Swansea includes 70.44% White, 19.25% Black or African American, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White10,36270.44%
Black or African American2,83219.25%
Two or more races1,1467.79%
Asian3702.52%
Race
Population ↓
Percentage (of total)
Two or more races610.41%
White430.29%
Asian220.15%
Black or African American50.03%
Race
Population ↓
Percentage (of total)
White10,31970.15%
Black or African American2,82719.22%
Two or more races1,0857.38%
Asian3482.37%

Swansea Marital Status

Economics and Income Statistics

Swansea 's average per capita income is $60,070. Household income levels show a median of $91,587. The poverty rate stands at 8.69%.

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$126,932-
Families$111,236$141,027
Households$91,587$113,725
Non Families$53,594$61,372

$60,070

Average Income

$91,587

Median Household Income

8.69%

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)