what county is lost nation ia in?
Sponsored Topics. Lost Nation is a city in Clinton County, Iowa, United States. The population was 497 at the 2000 census. Lost Nation is located at 41Â°57â²51â³N 90Â°49â²3â³W / 41.96417Â°N 90.8175Â°W / 41.96417; -90.8175 (41.964067, â90.817578). According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.7 kmÂ²), all of it land.