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 Mar 14 Sat 2026 Made in Montana Trade Show for Food & Gifts Mar 14 Helena Lewis and Clark County Fairgrounds Art & Exhibits Events Walks & Tours Dec 04 Fri Helena Holiday MADE fair Dec 4 - Dec 5 Helena Lewis and Clark County Fairgrounds Art & Exhibits Events Festivals