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DeKalb County, Illinois
Genealogy, History & Facts

DeKalb County, Illinois Facts

When was DeKalb County, IL Created?
DeKalb County was established on March 4, 1837.

What is the County Seat of DeKalb County, IL?
The County Seat is located in Sycamore (prior county seats was Orange from 1837-1839, Coltonville from 1839-1840) also, the county government website is .

What counties are adjacent to DeKalb County, IL?
Bordering Counties are  Boone CountyMcHenry CountyKane CountyKendall CountyLaSalle CountyLee CountyOgle CountyWinnebago County

DeKalb County, IL Census Records

What DeKalb County, IL census records are available?
There are many types of census records for DeKalb County guide you in researching your family tree. Federal Population Schedules are available for 18401850186018701880 (free index)1890 (fragment)19001910192019301940.

DeKalb Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. DeKalb Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. DeKalb 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

DeKalb County, IL Courthouse and Government Records

DeKalb County Courthouse

What genealogical records can I find in the DeKalb County Courthouse?
Researchers frequently overlook the great importance of DeKalb 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 DeKalb 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.

DeKalb County, IL Societies and Family History Resources

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

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

What other genealogical resources are available in DeKalb County, IL?
The following are web links to Genealogy, Records and Resources pertaining to DeKalb 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.

DeKalb Co. IL Maps, Atlases & Gazetteers

DeKalb Co. IL Books, Newspapers & Publications

DeKalb Co. IL Court, Probate Land and Tax Records

DeKalb Co. IL Cemeteries & Church Records

DeKalb Co. IL Family Websites, Pictures & Histories

DeKalb Co. IL General and History Websites

DeKalb Co. IL Military Records