About 1960, while roaming around on Main Street with half a dozen other kids, an adult that I didn't recognize said, "If you don't straighten up, I will call Clyde and Rita." That stranger to me, knew the first names of both of my parents who had lived there for all of their adult lives.
While working in a similar small town, I saw Debbie speeding way over the limit about 10 am. Later that day, where she worked, I sugggested that Dennis the highway patrolman would ticket her if he saw that. She replied that Dennis didn't start his shift until 10:30 and that it was Tuesday, his day off.
That town's school covered K through 8th grade. The total enrollment was under 50 students. That is 5 or 6 kids per grade.
Pie Town, New Mexico has a cafe and convenience store with gas pumps in the same building. That is the whole commercial district. A study about jobs for rural areas, showed that a community store needs 250 residents to support it.
On the highway near small communities, you wave when you meet a car since you recognize who it is from their vehicle.
Have you heard about the community so small that they didn't have a town drunk? They had to take turns being it.