Census Links is a growing catalog of links to transcriptions of census, tax lists, birth, death, marriage and military records, all freely available to help with your genealogy research.
From the Illinois Trails History and Genealogy Website
From the Alexander County, Illinois GenWeb
Completely indexed transcription of the 1820 Alexander County, Illinois Census along with many genealogy resources.
Complete transcription of the 1820 census records of Alexander County, Illinios. Includes census index and more resources and links.