Swansea is a village located in St. Clair County, Illinois. Swansea has a 2025 population of 14,552. Swansea is currently growing at a rate of 0.28% annually and its population has increased by 1.4% since the most recent census, which recorded a population of 14,351 in 2020.
The average household income in Swansea is $113,284 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.
Data after 2023 is projected based on recent change
The racial composition of Swansea includes 72.47% White, 17.7% Black or African American, and smaller percentages for Asian and multiracial populations.
Race | Population | Percentage (of total) |
---|---|---|
White | 10,583 | 72.47% |
Black or African American | 2,585 | 17.7% |
Two or more races | 1,089 | 7.46% |
Asian | 346 | 2.37% |
Married
Widowed
Divorced
Separated
Never Married
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%.
Name | Median | Mean |
---|---|---|
Married Families | $122,070 | - |
Families | $106,907 | $140,859 |
Households | $84,367 | $113,284 |
Non Families | $47,500 | $57,194 |
Average Income
Median Household Income
Poverty Rate