There are hogs in all 50 states.
I imagine hunting them in some places is like hunting the Adirondacks foor deer. They are there, you have to put your time in, know how to hunt them and even then get lucky.
When I was living in WI a buddy of mine had hog on his property from a neighbor who accidently had a bunchof escapees.
Although we saw a lot of sighn, we never saw the pigs. 2 years later his uncle shot 11 of them in one outing. Others had encounters also but it seemed as if they were hard to find.