Hey Tim I hope I can help you out a bit and I hope someone from Oregon and someone from California can help me out on some of the species on the coast. The most direct answer to your question is three species. The first is the Rocky Mountain elk which is the larest in number and ranges from Canada all the way to Arizona and New Mexico. They have even started planting some small herds in eastern states but the hunting is very limited. In the western states the hunting can be excellent and the tags easy to get. The second species is the Roosevelt Elk which lives along the west coast. I know it lives in Oregon but correct me if I'm wrong but it may also inhabit Washington and Northern California. From what I have heard I has a really big body size and a very typical rack. I have seen many pictures and it also seems to me like they may be darker in body color. The last species is the Tule elk which lives in areas in California. The only thing I can tell you about them is that they are small as far as elk go in both body size and rack.