What kind of tree do I have?

I live in the Pacific Northwest. The tree has needles that grow individually off of the trunk and branches. They grow all the way around the branch in a set of three, in a propeller type pattern which alternates all the way up the tree. The needles are anywhere frrom half an inch to two inches, have a sharp tip, a flat cross section, and are the same color top and bottom with a yellow green to dark green. The reason I ask is because I've tried several different websites and they have all given me different results.