here's a cut and paste from an article on the topic. IF there are any wild pigs reported in Colo., the division pretty much goes all in to remove them. SO, it's safe to say that there's certainly no hunt-able numbers of them any where in the state.
"Sand Creek in Kiowa County, in southeastern Colorado, saw an invasion of feral hogs back in 2006. Hogs were showing up rooting in the bar ditches along the highway, and there were several hog vs. vehicle collisions.
These particular feral hogs brought a disease, Porcine Reproductive and Respiratory Syndrome (PRRS), to a commercial hog facility that was biologically controlled. The disease caused the killing of 6,000 domestic hogs and almost completely destroyed the facility.
The feral hogs were eventually destroyed by the CPW and further measures have been implemented, in an attempt to keep feral hogs from Colorado. Colorado has formed a collation to keep feral hogs away with Kansas, Oklahoma and the United States Department of Agriculture.
Kansas recently passed a law outlawing the hunting of wild pigs in an attempt to prevent them from becoming a game animal. If these measures were not in place, and this collation were not operating, Colorado would already be in a situation similar to Texas."