Oregon

Albany - Scravel Hill, Willamette Valley Parachute Center, and Oregon State Univ Skydivers
Bend
Cresswell - Wright Bros. Skydiving 
Harrisburg 
Hermiston 
Mt. Hood - ParaSki (never a permanent DZ but noteworthy)
Medford - Beagle Sport Parachute Club
Redmond - Cline Falls Skydiviers
Roseburg 
Sheridan - Pacific Parachute Center - Ted Mayfield and Sheridan Skysports -
Willamette - Wright Bros. Skydiving