Demographic data on Glen Carbon is available from the U.S. Census Bureau's American Factfinder internet site as well as the Illinois Commerce Department. The results from a Special Census conducted in the Fall of 2004 can be seen here: Glen Carbon 2004 Census.

Another wealthy source of useful information on the character and makeup of Glen Carbon can be found at TheAlliance of Edwardsville & Glen Carbon web site. TheAlliance is a public/private not-for-profit corporation created to encourage development and assist businesses in Edwardsville and Glen Carbon. Its mission is to improve the quality of life in the area through economic development. The Alliance provides leadership and brings together the substantial resources of the Edwardsville / Glen Carbon community, including local government, business, and Southern Illinois University Edwardsville, as a catalyst for economic growth and long-term community betterment. The Alliance is comprised of thirteen members appointed by the City, Village, Chamber, SIUE and Alliance Board members.