Our Chapters

OPTA is organized into two chapters. Each of the chapters functions independently of each other to operate their programs and activities. The chapters come together under the board for state-wide programs and planning.

Northwest Chapter
Draws membership from Clackamas, Clatsop, Columbia, Gilliam, Hood River, Morrow, Multnomah, Sherman, Tillamook, Umatilla, Union, Wallowa, Wasco, Washington, and Yamhill counties.

South Willamette Chapter
Draws membership from Baker, Benton, Coos, Crook, Curry, Deschutes, Douglas, Grant, Harney, Jackson, Jefferson, Josephine, Klamath, Lake, Lane, Lincoln, Linn, Malheur, Marion, Polk, and Wheeler counties.