When we lived in Leaf Rapids (1973-79), our phone number was 2978. No area code, no three-digit prefix - just 2978. To connect with any of the Woods clan, all one had to do is dial those four numbers and the lovely 1970s Drab Yellow wall phone (pictured here next to Sean, who for some reason is balancing a piece of Lego on his head) would ring until someone answered - or until you gave up, for in those days we had no answering machine.
One of my friends had the number 2987. This always blew my mind, but in a town that small and with everyone using only four digits, the odds of close numbers were actually pretty good.