Lewis and Clark County Fairgrounds Helena, MT Email Address: Lewis and Clark County Fairgrounds 98 W. Custer Ave. Helena, MT Info: Website 406-461-8745 Region: Helena Upcoming events at Lewis and Clark County Fairgrounds Sep 26 Fri Last Chance Community Pow Wow 2025: Honor The Children Sep 26 - Sep 28 Helena Lewis and Clark County Fairgrounds Art & Exhibits Dance Events Festivals Music Performing Arts Sports & Recreation Workshops