Here's population growth chart for Wickenburg, AZ, starting in 1870: https://population.us/az/wickenburg/
It shows that, in 1910, Wickenburg had a population of 570. It's grown veeeery slowly over the years, peaking at around 7,000 today (the chart goes to 1914 when the town had 6,685 souls (not counting cattle and other livestock).
Sure, in the middle the desert (which most of AZ is), 570 can be a lot and "bedeutend," but that's all relative,
Edith just found this on Wikipedia:
Monowi, Nebraska, with a population of one, is the smallest incorporated town in America and the only to have just a single resident, reports the BBC.
Goes to show ya, size doesn't matter. :-)