Ferdania, in Saudi Arabia, is probably the world’s smallest city: it has one police station, one school, one market, one gas station, one health center, and about 10 houses. According to the Guinness Book of World Records, Hum, Croatia, is the smallest town in the world, with a population of only 23 citizens.
The tiny town, which rose during the Middle Ages, is closed off on one side by high towers and a system of walls; the other side is closed off by the outer walls of houses. The smallest city in the United States is Maza, located in Towner County, North Dakota. Established in 1893, the city had a population of 5 when the 2000 Census was taken.