Lost Nation is a city in Clinton County, Iowa, United States.

[3] The area which would later formally become Lost Nation was known by that name as early as 1855, though the origin of the name is unknown.

[5] A train station was established along the Sabula, Ackley and Dakota railroad in 1871.

[6] According to the United States Census Bureau, the city has a total area of 0.64 square miles (1.66 km2), all land.

There were 218 housing units at an average density of 288.2 per square mile (111.3/km2).

There were 221 housing units at an average density of 345.3 per square mile (133.3/km2).

36.8% of all households were made up of individuals, and 18.9% had someone living alone who was 65 years of age or older.

There were 225 housing units at an average density of 350.3 per square mile (135.3/km2).

30.5% of all households were made up of individuals, and 21.0% had someone living alone who was 65 years of age or older.

The annual Rustic Days in Lost Nation take place during the third weekend of July.