Welcome

This county is adoptable.
See this webpage for more information if you are interested.

Peoria County, Illinois Genealogy project is a free genealogical site about the people and history of this county.

We are a part of the ILGenWeb Project which is also a member of the USGenWeb Project. You can click on the logos at the top to be taken to these websites.

We hope you find helpful clues for your research of ancestors and relatives of Peoria county.

On December 3, 1818, Illinois was admitted as the twenty-first state of the Union.

Peoria County was formed in 1825 out of Fulton County. It was named for the Peoria, an Illiniwek people who lived there. It included most of the western valley of the Illinois River up to the Chicago river portage.

Peoria is a city in and the county seat of Peoria County, Illinois, United States, and the largest city on the Illinois River. Established in 1691 by the French explorer Henri de Tonti, Peoria is the oldest European settlement in Illinois, and is named after the Peoria tribe. (Source: Henri de Tonti-the Founder of Peoria - by Peoria Historical Society)

Early History of Illinois including what eventually because Peoria County.

Books

Resources

Maps

Vitals

Peoria County Government website

Illinois USGenWeb Archives

USGenWeb Archives

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Please consider contributing your pieces of Peoria county family history. YOUR HELP IS NEEDED. Our combined efforts can make this a great site for all who visit! Corrections, updates, and additions to this site are always welcome. Web sites go away and website addresses change. Please contact State Coordinator if you find a broken link on Peoria county web pages. Thanks to our past County Coordinators for all the hard work they put into creating and maintaining this website with help from volunteers who so generously contributed information, documents and photos. Join us on Facebook too --> Peoria County, Illinois Genealogy Research Community The Rootsweb Mailing Lists Archives were shut down on April 6, 2023. Our Facebook group is a great way to share photos and genealogy information.