Data Services Staff compiles, maintains and monitors a vast amount of current and historical demographic data at various geographic levels for the five-county Bi-State Region, states of Illinois and Iowa and the Nation.  To access demographic data for the Region, please see the Data Clearinghouse page.  Or, to access multiple data sets and/or multiple geographies within the Nation, such as census blocks, tracts, voting districts, cities, counties and school districts, visit the Censusā€™ American Factfinder or please contact our Data Services Staff.


pdf 1950 2010 census population (bi state region) (19 KB)

2010 Census Demographic Profiles

2000 Census Demographic Profiles