Another Gazetteer, this time the forsaken town of Prospector's Reach. Nestled on the edge of the cursed Chillwynd Marches, it is a mustering point for expeditions heading into the haunted frozen plains and frequently feel the chilly touch of the Marches' whispering winds.
http://www.utherwaldpress.com/2015/10/alyeskan-gazetteer-prospectors-reach.html
You say both that the locals are isolationists, but that there's a big set of businesses catering to adventurers - does this mean there's something of a split between locals who mistrust the outsiders and locals who've done well out of cashing in on them?
Also, more prosaically, what kind of size town/population are you thinking this place is?
The businesses are really newcomers who saw an opportunity and took it, its the older lot who are the isolationists.
Probably a few hundred, though no more than 500 souls at any given time.
So "large village" as far as the modern world is concerned!
And yeah, that makes sense :)