The data used in this Jefferson County, Illinois demographic data report comes from the 2010 U.S. Census.
* Data is not warranted to be accurate or current.
There are major , cities in our database at this time.
* County population gainers from 2000 to 2009
Min. 10,000 (Source: U.S. Census)
* Top population losers from 2000 to 2009, Min. 10,000 (Source: U.S. Census)