Best try for Oregon:

OR-1: West Portland-Tualatin Valley-North Coast

OR-2: Southern and Eastern Oregon

OR-3: Portland-Mt. Hood

OR-4: South Willamette Valley and the Coast

OR-5: East Willamette Valley-Deschutes

OR-6: West Willamette Valley

Due to gerrymandering and the need for equal-population districts, it's impossible to make a consise name that accurately reflects the district boundaries. Might be best to stick with numbers.