Yeah, a "little town" around here is about 150 people. Actually, that's a fairly
big town
A post office and a bar are the only prerequisites. The PO is optional.
Our daughters graduated in a class of about 12. A lot of these small schools, the first thing they ask a prospective teacher hire is how many kids do you have? (to add to the school class size)
Sometime back, there was one little town that had maybe 2 kids and they hired a teacher with 3 or 4 kids which put them up over the minimum of 5 (?) to stay open.
There was a murder-suicide in our county maybe 8-10 years ago, but I don't remember if anything has happened since then. A guy out in our neighborhood got drunk a couple years ago and took a shot at his sister, but unfortunately only wounded her