Boise County Fair 2024. Western idaho fair, a regional event attracting more than 267,000 patrons from oregon, washington, idaho, utah and northern california, is the largest event in idaho. Check out the rides featured at this year's celebration at the western idaho fair!

Western idaho fair, a regional event attracting more than 267,000 patrons from oregon, washington, idaho, utah and northern california, is the largest event in idaho. The western idaho fair is a family tradition that has been around for over 100 years.