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Warren County, Illinois
Genealogy, History & Facts

Warren County, Illinois Facts

When was Warren County, IL Created?
Warren County was established on January 13, 1825.

What is the County Seat of Warren County, IL?
The County Seat is located in Monmouth (prior county seats was 1830–1831 at the House of Alexis Phelps) also, the county government website is .

What counties are adjacent to Warren County, IL?
Bordering Counties are  Mercer CountyKnox CountyFulton CountyMcDonough CountyHenderson County

Warren County, IL Census Records

What Warren County, IL census records are available?
There are many types of census records for Warren County guide you in researching your family tree. Federal Population Schedules are available for 183018401850186018701880 (free index)1890 (fragment)19001910192019301940.

Warren Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. Warren Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. Warren Co. Union Veterans Schedules is available for 1890. One can find free online and printable census forms to help you with your research. See Also Illinois Census Records Research Guide

Warren County, IL Courthouse and Government Records

Warren County Courthouse

What genealogical records can I find in the Warren County Courthouse?
Researchers frequently overlook the great importance of Warren County court, probate, and land records data as a useful resource of ancestry and genealogy information. Buried away in Illinois courthouses and archives everywhere are the ambitions and frustrations of countless Illinois residents.

The possibilities are excellent that your forefathers have left a comprehensive document of at least a number of facets of their lives in the Warren County court records. Even if your forebears is not referred to in a Court case, contemplate all of the other procedures that could have lead to him or her to appear in court records. See Also Illinois Corthouse Records Research Guide.

Warren County, IL Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for Warren County, IL?
A list of Warren County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Illinois Archives, Historical & Genealogical Societies.

Where can I connect with other Warren County, IL Researchers through message boards and forums?

What other genealogical resources are available in Warren County, IL?
The following are web links to Genealogy, Records and Resources pertaining to Warren County. These genealogy links fall into 3 categories: Commercial Sites, Private Sites or Organization Sites. Some have free access some require a cost. This is simply a collection that has been gathered or submitted. I do not recommend or promote one genealogy site over another.

Warren Co. IL Maps, Atlases & Gazetteers

Warren Co. IL Books, Newspapers & Publications

Warren Co. IL Cemeteries & Church Records

Warren Co. IL Family Websites, Pictures & Histories

Warren Co. IL General and History Websites

Warren Co. IL Military Records