Welcome to my neck of the woods (soon). There are definitely a few boarding stables towards the Back Mountain/Dallas area. Have you tried looking there? It's about 20 minutes from Wilkes Barre.
I don't board my guys so I'm not entirely familiar with all of the places, but I've heard of people boarding at Borrowdale and Peaceful Valley Eq. Center. There's another place up near Harvey's Lake and at least two places out in Sweet Valley which is another 10 minutes or so.
Your best bet might be to contact a tack shop and see if they have a listing. The local one here usually has a ton of names on the community board. Hope you find something!