The Pioneer District was founded in 1954 and is a member of the Oregon State Federation of Garden Clubs, Inc.  The District encompasses three counties:  Washington, Columbia and Yamhill.

The District is composed of 15 Garden Clubs:   Beaverton, Cedar Mill, Chehalem, Hillsboro, McMinnville, North Plains, Oregon Cactus and Succulent Society, Robin Hood, Scappoose, St. Helens, The Five Oaks, Tigard, Tualatin Valley, West Point and the Oregon Camellia Society.