- Amity, Oregon, OR — 61 chapters
- Aurora, OR — 16 chapters
- Baker, OR — 12 chapters
- Banks, Oregon, OR — 68 chapters
- Benton County, OR — 51 chapters
- Boardman, OR — 22 chapters
- Canby, Oregon, OR — 164 chapters
- Canyonville, OR — 16 chapters
- Carlton, OR — 17 chapters
- Cascade Locks, Oregon, OR — 54 chapters
- Cave Junction, OR — 21 chapters
- Chiloquin, OR — 16 chapters
- Clatskanie, Oregon, OR — 65 chapters
- Coquille, OR — 16 chapters
- Corvallis, OR — 12 chapters
- Depoe Bay, Oregon, OR — 54 chapters
- Drain, Oregon, OR — 53 chapters
- Dunes City, Oregon, OR — 51 chapters
- Enterprise, OR — 16 chapters
- Falls City, Oregon, OR — 46 chapters
- Forest Grove, Oregon, OR — 83 chapters
- Gervais, OR — 17 chapters
- Glendale, Oregon, OR — 60 chapters
- Halsey, OR — 1 chapters
- Heppner, Oregon, OR — 73 chapters
- Hermiston, OR — 58 chapters
- Hillsboro, OR — 14 chapters
- Hines, OR — 15 chapters
- Independence, OR — 20 chapters
- Jacksonville, OR — 15 chapters
- John Day, OR — 14 chapters
- Joseph, Oregon, OR — 66 chapters
- Keizer, OR — 45 chapters
- King, OR — 15 chapters
- Klamath Falls, OR — 16 chapters
- La Grande, OR — 3 chapters
- La Pine, OR — 4 chapters
- Lake Oswego, OR — 42 chapters
- Lebanon, OR — 17 chapters
- Lowell, OR — 9 chapters
- Malheur County, Oregon, OR — 67 chapters
- Metolius, Oregon, OR — 33 chapters
- Metro, OR — 53 chapters
- Mill, OR — 17 chapters
- Millersburg, OR — 16 chapters
- Milton-Freewater, Oregon, OR — 101 chapters
- Monroe, Oregon, OR — 46 chapters
- Morrow County, Oregon, OR — 48 chapters
- Mt. Angel, OR — 43 chapters
- Myrtle Point, Oregon, OR — 41 chapters
- Newport, OR — 14 chapters
- North Plains, Oregon, OR — 61 chapters
- Nyssa, Oregon, OR — 68 chapters
- Ontario, OR — 5 chapters
- Oregon, OR — 18 chapters
- Redmond, OR — 12 chapters
- Rockaway Beach, Oregon, OR — 64 chapters
- Roseburg Urban Sanitary Authority, OR — 7 chapters
- Salem, OR — 12 chapters
- Sandy, OR — 19 chapters
- Scio, OR — 22 chapters
- Shady Cove, Oregon, OR — 55 chapters
- Sheridan, OR — 15 chapters
- Sherwood, OR — 17 chapters
- Siletz, OR — 16 chapters
- Springfield, OR — 18 chapters
- Stanfield, OR — 13 chapters
- Sublimity, Oregon, OR — 59 chapters
- Tillamook, Oregon, OR — 64 chapters
- Toledo, OR — 18 chapters
- Troutdale, OR — 15 chapters
- Tualatin, OR — 16 chapters
- Umatilla, OR — 12 chapters
- Union County, OR — 45 chapters
- Union, Oregon, OR — 72 chapters
- Washington County, OR — 10 chapters
- Wilsonville, OR — 13 chapters