AMIDON, N.D. (AP) - A sign outside the tiny southwestern North Dakota town of Amidon boasting it's the smallest county seat in the nation still stands, but the designation doesn't.

A sign outside the Slope County town boasts that it's the smallest county seat in the nation. But the 2010 census put the town's population at 20 — and Gann Valley, S.D., now has the distinction ...

While Rhode Island might be tiny, it’s not the smallest in terms of population in the U.S. The state with the least population is Wyoming, according to World Population Review.