Directions to Umatilla County Fair/Fairgrounds Directions to Umatilla County Fair/Fairgrounds Search | Advanced Search | New Members | Coupons and Discounts | All Categories Other >> Festivals & Events Umatilla County Fair/Fairgrounds PO Box 94Hermiston, OR 97838 | map (541) 567-6121 Visit Site Get directions to: Umatilla County Fair/Fairgrounds, PO Box 94, Hermiston OR Get directions from: Click to Print This Page