Back to Search Castle Rock Apts. - Umatilla County Housing Authority Categories Apartments, Rentals Real Estate Membership Dues 155 SW 10th Street , Hermiston , OR , 97838 P.O. Box 107 , Hermiston , OR , 97838 (541) 481-3003 Send Email Membership Type Membership Dues Share × Print Email Facebook LinkedIn X Pinterest Powered By GrowthZone Upcoming Events