What it actually is
North Park is a high mountain basin in Jackson County, near the Wyoming border, made up of wetlands, hay meadows, and rolling sage-and-grass country enclosed by the Park Range to the west and the Medicine Bow Mountains to the east. Walden, at roughly 8,100 feet, is the county seat and the only incorporated town — a small ranching hub of a few hundred people. This is one of the least-populated counties in Colorado, and that emptiness is the point: it's a working ranching valley, not a resort town.
The area is best known for wildlife and water. North Park bills itself as the 'Moose Viewing Capital of Colorado' after moose were established here in the 1970s, and nearby State Forest State Park (in the Medicine Bow Range east of town) runs a Moose Visitor Center. The North Platte River rises here — its Northgate Canyon stretch is designated Gold Medal Wild Trout water — and North Delaney Buttes Lake is one of only two Gold Medal lakes in the state. Elk, mule deer, and antelope hunting round out why a lot of people come. Property here tends to be land, cabins, hunting/fishing retreats, and working or recreational ranches. It's usually far more affordable per acre than the resort counties over the passes — but 'affordable' comes bundled with remoteness, so verify current figures for any specific property rather than trusting a rule of thumb.