Carson is a city in Pottawattamie County, Iowa, United States.

Carson was formed in 1881 as a result of the establishment of a depot on the Burlington and Rock Island Railroad at this location during the previous year.

According to the United States Census Bureau, the city has a total area of 0.71 square miles (1.84 km2), all land.

There were 347 housing units at an average density of 531.5 per square mile (205.2/km2).

There were 353 housing units at an average density of 497.2 per square mile (192.0/km2).

The racial makeup of the city was 98.8% White, 0.2% Native American, 0.1% Asian, and 0.9% from two or more races.

25.8% of all households were made up of individuals, and 11% had someone living alone who was 65 years of age or older.

There were 309 housing units at an average density of 591.0 per square mile (228.2/km2).

26.3% of all households were made up of individuals, and 14.0% had someone living alone who was 65 years of age or older.