Oneida County Fair Share: AttractionsNon-Profit & Service Organizations Oneida County Fair Visit Website 315 S. Oneida Ave #202 Rhinelander, WI 54501 (715) 490-1704 OCFairwi.com Facebook Hours: 2022 - Thursday July 28 through Sunday July 31 About Map About The Oneida County Fair was first introduced to the area in 1896. It's held at Pioneer Park in the heart of Rhinelander. We're a non-profit group of volunteers supporting our community! What's Nearby? Distance: 5 10 15 20 25 50 mi.