Contact Us

University of Illinois Extension serving Henry, Mercer, Rock Island and Stark Counties

Rock Island County
321 W 2nd Avenue
Milan, IL 61264
Phone: 309-756-9978
FAX: 309-756-9987
Hours: Monday - Friday, 8am - 4:30pm (closed from 12pm - 1pm)

Henry-Stark County
358 Front Street
Galva, IL 61434
Phone: 309-932-3447
FAX: 309-932-3454
Hours: Monday, Wednesday and Friday from 8am - 4:00pm (closed from 12pm - 12:30pm)

Mercer County
2106 SE Third Street
Aledo, IL 61231
Phone: 309-582-5106
FAX: 309-582-7338
Hours: Tuesday and Thursday from 8am - 4:00 pm, (closed from 12pm - 12:30pm)

Volunteering with University of Illinois Extension

University of Illinois Extension is accepting applications for volunteers to help bring our programs to the citizens of our local counties, especially in the areas of 4-H and the Master Gardener program.

Interested in becoming a 4-H Leader or 4-H Special Interest Club Leader, please contact Jennifer Peterson, Extension 4-H Youth Development Educator at or by phone at (309) 932-3447. You can also fill out this registration form:

For the horticulture program and to become a Master Gardener or a Master Naturalist, contact Tracy Jo Mulliken

Find out more by contacting your local Extension unit:

  • Henry-Stark 309-932-3447
  • Mercer (309)585-5106
  • Rock Island (309)756-9978.