Paton is a city in Greene County, Iowa, United States. The population was 221 at the time of the 2020 census. Paton got its start following const…Paton is a city in Greene County, Iowa, United States. The population was 221 at the time of the 2020 census. Paton got its start following construction of the railroad through the area. According to the United States Census Bureau, the city has a total area of 0.56 square miles, all land.