Illinois Regional Archives Depository (IRAD) System Illinois State Archives
Researchers may visit an IRAD depository and examine the records that are available. The seven IRAD depositories are open Monday through Friday. Depositories are closed on Saturdays and Sundays, state holidays, and any weekdays the university libraries are closed. Hours are reduced in June and July. Please call before planning a visit to a depository.
IRAD welcomes mail and telephone requests from researchers interested in genealogy and local history. The regional depositories are unable to receive or send requests by email. Please direct inquiries to the depository holding the records you wish to have searched. For contact information, please visit the Regional Map and Contact Information section.
In order for depository staff to conduct a search of the IRAD holdings, researchers should provide the following information:
- The full names of the persons they are researching
- The approximate year when these persons are expected to appear in the records
- The county which created the records
- Record titles/types to search
Please include any additional information that may assist in locating the person or information requested (such as township or precinct for searches of tax and election records). Requests are limited to two names at a time. Please wait for a response to your initial request before submitting another one. Please send inquiries directly to the depository holding the records of the county to be searched.
The research services of the IRAD system are provided at no charge. Therefore, when requesting information by mail a self-addressed stamped envelope is not necessary. However, there may be a photocopy fee for which you will be billed. Unless an expenditure limit is set in advance by the researcher, authorization to produce photocopies will be requested for billings that exceed $5.