American Postal Workers Union representing Portland, Mt. Hood, Astoria, Aurora, Banks, Battleground, Beaverton, Boring, Canby, Estacada, Gladstone, Gresham, Hillsboro, Kelso, Lake Oswego, Longview, McMinnville, Newberg, Oregon City, St Helens, Sherwood, The Dalles, Troutdale, Tualatin, West Linn, Wilsonville, Woodburn, Woodland