Paul Slichter responded within two minutes. Thank you Paul!
"My best guess is either Vaccinium caespitosum or Vaccinium deliciosum. It’s one of those two species. I have trouble distinguishing between the two."
So either dwarf bilberry or Cascade bilberry.
The purpose of this forum is to help people identify things they've seen while out hiking: wildflowers, trees, birds, insects, small animals, animal tracks, even geographical features like buttes or streams
"Blueberry," "bilberry," and "huckleberry" are pretty arbitrary terms. They're all Vaccinium, and they're all edible.