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 UsGenWeb Census Project
1850 Mortality Schedule, Death Certificate Index, Misc. Marriage Records, Birth Indexs
1860 Census, Peoria County, Illinois
1870 Census, Peoria County, Illinois
1830 Census, Peoria and Putnam County, Illinois
1910 Census, Peoria County, Illnois