Peoria County, Illinois Genealogy

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Peoria County, Illinois
Boundary map of Peoria County, Illinois
Map of the U.S. highlighting Illinois
Location of Illinois in the U.S.
Founded: January 13, 1825
County Seat Peoria
Peoria County Courthouse.gif
Photo courtesy Illinois Regional Archives Depository, Illinois State Archives
Address Peoria County Courthouse
324 Main Street
Peoria, Illinois 61602
(309) 672-6070
Peoria County Website


Template:Illinois-stub United States Gotoarrow.png Illinois Gotoarrow.png Peoria County

Peoria County Organization

Peoria County's civil records start the following years:

Beginning Dates for Peoria County Records
Birth Marriage Death Census Land Probate
1878 1825 1877 1830 1818 1825

County records are most often kept at the County Courthouse or another local repository. For further information about where the records for Peoria County are kept, see the Peoria County Courthouse page.

Historical Facts

Peoria County is named for the Native American tribe called the Peorias which was originally one of the tribes from the Illinois confederacy.

Boundary Changes

  • 13 January 1825: Peoria County was created from Fulton County. County seat: Peoria [1]

Record Loss

Places / Localities

Populated Places

Neighboring Counties

Records and Resources


  • The Historical Encyclopedia of Illinois has a Peoria County edition. This includes a state history section along with a county history and biographies of Peoria County residents. See the wiki article for links to available copies and indexes.


Illinois cemetery records often identify birth, death, relationship, and military information, as well as religious affiliation.

  • Find A Grave can be searched by the name of a person or family to find where a person is buried.  Usually gives birth and death dates often with a picture of the tombstone.  May give obituaries, names of family members and links to their information in Find A Grave.


Historical populations
Census Pop.
IL Counties 1900-1990

1840 Pensioners

  • A Census of Pensioners for Revolutionary or Military Services: With their Names, Ages, and Places of Residence, as Returned by the Marshalls of the Several Judicial Districts, Under the Act for Taking the Sixth Census. Washington, D.C., 1841. FHL 973 X2pc 1840; FHL 2321; digital version at Google Books. [See Illinois, Peoria County on page 188.]

Church Records

A brief history of Churches in Peoria County can be found on the Peoria County webpage of Illinois Ancestors. The website host has provided extracts from James Rice's 1912 history of the city and county of Peoria, Illinois.

LDS Ward and Branch Records

  • Peoria

Court Records

Ethnic Research

African American

The following have information concerning African American research.



Local Histories

  • Ballance, C. The History of Peoria, Illinois. Peoria, Ill.: Printed by N.C. Nason, 1870. Digital versions at Ancestry ($); Internet Archive.
  • The History of Peoria County, Illinois: containing a history of the Northwest, history of Illinois, history of the county, its early settlement, growth, development, resources, etc., etc., a sketch of its cities and towns, their improvements, industries, manufactories, churches, schools, etc., etc., a war record of its volunteers in the late rebellion, general and local statistics, biographical sketches, portraits of early settlers and prominent men, map of Peoria County, Constitution of the United States, miscellaneous matters, tables, etc., etc.. Chicago: Johnson & Co., 1880. Digital version at Ancestry ($); Google Books; Internet Archive.
  • Portrait and Biographical Album Peoria County, Illinois. Chicago, IL, USA: Biographical Publishing, 1890. Digital version at Ancestry ($). Another Ancestry ($) version; Internet Archive.
  • McCulloch, David. Early Days of Peoria and Chicago: An Address Read before the Chicago Historical Society at a Quarterly Meeting Held January 19, 1904. Chicago: The Society, 1904. Digital version at Ancestry ($); Google Books; Internet Archive.
  • Bess, F. B. Eine populäre geschichte der stadt Peoria. Peoria, Ill.: unknown, 1906, c1905. Digital versions at Ancestry ($); Internet Archive. English translation: (which includes some biographies): A Popular History of the City Peoria. Digital version of translation at Illinois Ancestors Presents Peoria County.
  • Rice, James M. Peoria, City and County, Illinois: A Record of Settlement, Organization, Progress, and Achievement. Chicago: The S.J. Clarke Pub. Co., 1912. Digital versions at Ancestry ($); Google Books.
  • Slane, Odillon B. Reminiscences of Early Peoria: Including Indian Stories. Peoria, Ill.: Priv. print., 1933. Digital version at Ancestry ($); World Vital Records ($).

Land and Property



Civil War

Civil War service men from Peoria County served in various regiments. Men often joined a company (within a regiment) that originated in their county. Listed below are companies or regiments that were formed from men of Peoria County.

- 17th Regiment, Illinois Infantry, Companies A and B.
- 44th Regiment, Illinois Infantry, Company K.
- 53rd Regiment, Illinois Infantry, Company H.
- 77th Regiment, Illinois Infantry, Companies A, E, F, G, I and K.
- 82nd Regiment, Illinois Infantry, Company E.
- 86th Regiment, Illinois Infantry, Companies C, D, H, I and K.


Newspapers and Obituaries

Probate Records

Peoria County Probate Case Files Index, 1825-1887, courtesy: Illinois State Archives.

Probate Case Files Index, 1825-1887, courtesy: Genealogy Trails.


County Courthouse

County records are most often kept at the County Courthouse or another local repository. For further information about where the records for Peoria County are kept, see the Peoria County Courthouse page.

Family History Centers

Illinois Regional Archives Depository (IRAD)

IRAD is a system of Illinois Regional Archives Depositories managed by the Illinois State Archives, housing the archival records of local Illinois counties, townships, municipalities and school districts. The seven Regional Depositories are housed on state university campuses scattered throughout Illinois. Western Illinois University houses the records for Peoria County.

Public Libraries

Social Groups Online



Vital Records

Web Sites


  1. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).