From a total population of 12,927, Swansea has a median age of 40.6. The average age of males, in Swansea, is 39.7 while the average age of females is 41. When you compare this to median age of Illinois, Swansea is 3.6 years older.
The median income of individuals, in Swansea, is $32,843 while the average household income is $66,491. When comparing the median income of people living in Swansea to the rest of Illinois, the average income in Swansea is $2,824 more.