Not all towns grow up to be cities, but there is a process. There are symptoms. They say it takes a village to raise a child; it takes land to raise a city.
Look for out buildings, they use to be on farms outside of town with names like the Boyd’s place or maybe the Johnson’s. Sections become lots, some farmhouses survive, some do not.
The sheds and shops are in the yard outback by the alleys. The alleys are basalt gravel and dust which have not hardened into asphalt yet.