My sister and brother-in-law live outside the small town of Persia, Iowa. It was named after the country when it was founded in 1882 but I’m having a hard time verifying that. The Wikipedia article says BBC Persia did a short piece on the town in 2012 but I can’t get the video to play. There is also an online article by an Iranian writer who saw the exit sign while driving by on I-80 and stopped in for a visit in 1996. The town is still pretty much the way he described it.
Edit: My parents are from the small town of Cadiz, Ohio which was named after the city in Spain, except the residents pronounce it CADD-is.