Contact or Visit Us

The Illinois State Geological Survey is headquartered at the Natural Resources Building, 615 E. Peabody Dr., Champaign, Illinois 61820-6918. Call us with questions at 217-333-4747 or send email to info@isgs.illinois.edu.

  • Director’s Office: 217-333-5105
  • Sales & Information Office: 217-244-2414 (Monday-Friday, 8:15 a.m. – noon)
  • Geological Records: 217-333-5109
  • Samples Library: 217-333-3567
  • Freedom of Information Act requests