Western Idaho Fair is a 10 day fair that begins the third Friday of every August. Western Idaho Fair is made up of a mixture of grounds acts, concerts, competitions and contests, great food, Butler Carnival, and vendors. With a 250,000+ gate attendance, Western Idaho Fair is the largest event in Idaho. 70% of its patrons reside in Ada County.
Since the mid-eighties, Western Idaho Fair has been independent of any taxpayer support. Entitled an “enterprise fund,” it is entirely self-funded including salaries, capital improvements, etc. Ada County officially owns the property and buildings. In 2003 officials renamed the property “Expo Idaho” in order to attract more business to the facility during offseason (non-fair) months. More than 250,000 people attend Western Idaho Fair and another 750,000 come through the facilities for trade shows, auctions, sporting events, livestock activities and company gatherings. The current director, Bob Batista, is the longest-serving fair manager in its history.