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DuPage County, IL
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Early History of DuPage County

In the early days the Illiniwek, and later the Miami, Iroquois, Sak, Fox , Kickapoo and Pottawatomi Indians lived in this area, rich in fish, game and vegetation. In 1673 Father Jacques Marquette and French explorer Louis Joliet came to the area, following the Illinois and DesPlaines rivers from the Mississippi. Trappers and traders came throughout the 1700s and early 1800s, the best known being a Frenchman by the name of DuPage. In 1800 he settled where the east and west branches of the river join. The first permanent settlement was made in the fall of 1830 and the spring of 1831. Read more about the History of DuPage County from A History of the County of Du Page, Illinois - 1855 (free book on Internet Archive)

We also have excerpts from this book under the "History" menu above.

DuPage County was formed on February 9, 1839, out of Cook County. The county took its name from the DuPage River, which was, in turn, named after a French fur trapper, DuPage.

As of the 2020 census, the popular was 932,877, making it Illinois' sencond-most populous county. Its county seat is Wheaton.


DuPage County Clerk
Address: 421 N. County Farm Road
Room 1-300
Wheaton, IL 60187
Phone: (630) 407-5500
Order Vital Records Online

This county is adoptable.

Our previous County Coordinator, Joe Markovich passed away June 2, 2023.

See this webpage for more information if you are interested.

Contact: IlGenWeb State Coordinator



Research Related Links

  • Illinois State Archives - Includes online databases for:
    1. Illinois Servitude and Emancipation Records
    2. Public Domain Land Tract Sales Database
    3. Physicians Database
    4. Databases of Illinois Veterans
    5. 1929 Illinois Roll of Honor
    6. Illinois Black Hawk War Veterans
    7. Illinois Civil War Muster and Descriptive Rolls
    8. Illinois Civil War Veterans of Missouri Units
    9. Illinois Civil War Veterans Serving in the U.S. Navy
    10. Illinois Mexican War Veterans
    11. Illinois Soldiers' and Sailors' Home Residents
    12. Illinois Spanish–American War Veterans
    13. Illinois Veterans' History Project
    14. Illinois War of 1812 Veterans
    15. Illinois Winnebago War Veterans
    16. Illinois Statewide Death Index, Pre–1916
    17. Illinois Statewide Death Index (1916–1972)
    18. Illinois Statewide Marriage Index, 1763–1900


  • For corrections or additions, please contact: State Coordinator

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