The population of Twin Peaks?
50,000+

Admittedly I know nothing of small-town American life, but at no time does Twin Peaks convince me that there are 50,000 people living there - 5,000 I could realistically accept, police force of half a dozen, travelling judge convening in the Roadhouse etc. Horne's department store would be weird, but could conceivable be a folly on Ben's part.
Is this more dicking around from the network or just sloppiness?