Records that survive
These are the record series from DuPage County held by the Illinois Regional Archives Depository (IRAD) system, with the earliest and latest years. A span can include gaps. They include county, township and city records. This county's are held at Northern Illinois University in DeKalb.
Marriages, births and deaths
- Marriage Record1839–1932
- Marriage Record Index1839–1932
- Birth Record1877–1919
- Death Record1877–1928
- Death, Burial and Removal Permit Record1916–1926
Naturalization
- Naturalization Record, Circuit Court1861–1906
- Naturalization Record of Soldiers, Circuit Court1865–1887
- Naturalization Record, County Court1877–1906
- Naturalization Dockets, Circuit Court1885–1906
- Naturalization Dockets, County Court1888–1906
- Naturalization Declarations of Intent, County Court1900–1906
- Naturalization Declarations of Intent, Circuit Court1906–1918
- Naturalization Certificate Stubs, Circuit Court1911–1927
- Naturalization Petition Record, Circuit Court1920–1955
- Naturalization Order Books, Circuit Court1930–1955
Tax records
- Local Improvements Board Special Assessment Record (Glen Ellyn)1930–1939
Court records
- Board of Supervisors' Minutes1839–1959
- Local Improvements Board Minutes (Glen Ellyn)1910–1914
- Public Library Board Minutes (Elmhurst)1912–2002
- Repatriation Record, Circuit Court1940–1953
- School Board Minutes1962–1970
Other records
- Physician Certificate Record1877–1955
- County Yearbooks1921–1927
Search the IRAD database for this county
Source: Illinois State Archives, Local Government Records Database (choose the county to see every series and its accession number). Contact the depository before you visit. Illinois began statewide registration of births and deaths in 1916.
Where to find the records
- DuPage County official website
Hours, addresses and phone numbers for the county clerk, the recorder of deeds and the clerk of the circuit court, and any online record search the county offers.
- The county clerk
Births, deaths and marriages registered in the county.
- The recorder of deeds
Deeds, mortgages and other land records (in some counties the county clerk is also the recorder).
- The clerk of the circuit court
Probate (wills and estates), divorces and civil and criminal cases.
- The Illinois State Archives
In Springfield, with older county records at its regional depositories (IRAD) on university campuses.
- Illinois Regional Archives Depository (IRAD) systemfree
The State Archives' regional depositories, which hold older county, township and city records; search its Local Government Records Database by county.
- FamilySearch Catalogfree
Search by place for "Illinois, DuPage" to find filmed and digitized records, many viewable free online with a FamilySearch account.
Offices change their hours and access rules; call before you visit.
Boundaries and parent counties
Formed from: Cook County
Check the parent county for earlier records: Cook County
Records stay with the county that created them. If your ancestor lived here before 1839, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.
Research tip
Illinois began statewide registration of births and deaths in 1916; counties kept registers earlier, often from 1877 or 1878. The Illinois Statewide Marriage Index, from the State Archives, covers many marriages from 1763 to 1900.