Schleswig is a city in Crawford County, Iowa, United States.

[4] The city was named after the Schleswig in Germany and Denmark, from which the original settlers came.

There were 411 housing units at an average density of 331.6 per square mile (128.0/km2).

Hispanic or Latino persons of any race comprised 12.8% of the population.

There were 419 housing units at an average density of 322.3 per square mile (124.4/km2).

29.4% of all households were made up of individuals, and 15.4% had someone living alone who was 65 years of age or older.

There were 411 housing units at an average density of 312.6 per square mile (120.7/km2).

31.5% of all households were made up of individuals, and 22.0% had someone living alone who was 65 years of age or older.