Can a district include a part of a county that has no people..

[pbrower2a]

Michigan's First Congressional District (mostly the Upper Peninsula but also the northernmost tier of the Lower Peninsula) includes some uninhabited islands, especially Isle Royale National Park. There is no reasonable way to put those uninhabited islands (the National Park is closed in the winter and has  no permanent population aside from its wildlife) in any other district.

Oddity: dogs are not allowed there, as there is a transitory wild wolf population and the Park Service does not want tame wolves (dogs really are wolves) mating with wild ones. Isle Royale is one of the few places where Man is the undisputed top predator when there, as dogs are just above us in the food chain. If you think we are the top of the food chain, let me discuss my encounter with four large dogs (forget the breed-- Dobermans or Rottweilers?) I was doing Census work, those dogs  charged the door because the home's owners weren't there. Four 100-pound dogs might as well be one 400-pound tiger in view of their power, strength, agility, speed, bite force, and sharp claws and teeth. I was scared that the latch would break on the door.