Terminology can be confusing to first-time visitors.
Geographically speaking, the Upper Cape (closest to the ‘mainland’) includes Bourne/Cape Cod Canal Region, Sandwich, Falmouth, Woods Hole, and Mashpee.
The Mid-Cape includes Barnstable, Hyannis, Yarmouth, and Dennis.
The Lower Cape includes Brewster, Harwich, Chatham, and Orleans.
The Outer Cape (farthest from the ‘mainland’) includes (south to north): Eastham, Wellfleet, Truro, and Provincetown.