Kayteg1,
"My bet would be for Oregon."
I really doubt it! Lance doesn't use basically any wood in their RV's. Frames are steel, insulation is foam board, walls are Azdel composite, exterior is fiberglass product, interiors cabinets are Lite-Ply composite. None of which is made in or near Oregon or California. Lance might see some wood in shipping containers but that is incoming to Lance to be disposed of.
Oregon costs of living are approximately 122% of the national average which has a lot of bearing on the cost of labor and taxes mandated/business cost climate. While all the other locations mentioned have less than or far less than 100% of the cost of living numbers. Where we live which is a very upbeat region with ~3% unemployment constantly and also northern Indiana (the RV making center of the world and only 120 miles south of our home on Lake Michigan), the cost of living is at 84% to 88% of the national average and Texas and some other states are even lower yet. That is big and why high cost of doing business and labor issues operations are relocating so much. They are NOT stupid! Vehicles, RV's, and most major appliances among so many other things are made in middle America or the east side of the country and are shipped to the west and it has had no affect on them nor will it on RV's. They all sell competitively and have for decades.