Yes. Lots. Very diverse. Their numbers, and how they lived, are both hot topics of debate in the athropological community and suchlike. But yeah, quite a few.
The past 50 years have done wonders for what we know about pre-West North America. The next few decades will do too...
"1491" opened my eyes to a few new ideas most recently. I highly suggest it as a must-read. But, be skeptical! It's not all fact...
I live on the West Coast of BC. The Coast Salish were a fairly large tribe. Nootka, Squamish... Warrior folk too.