Preston is a city in Jackson County, Iowa, United States.

Those present at the time of the town's platting were allowed to name Preston's streets after themselves.

[5] According to the United States Census Bureau, the city has a total area of 0.96 square miles (2.49 km2), all land.

There were 436 housing units at an average density of 506.3 per square mile (195.5/km2).

There were 464 housing units at an average density of 483.3 per square mile (186.6/km2).

The racial makeup of the city was 98.6% White, 0.5% African American, and 0.9% from two or more races.

29.4% of all households were made up of individuals, and 17.7% had someone living alone who was 65 years of age or older.

There were 433 housing units at an average density of 439.0 per square mile (169.5/km2).

35.7% of all households were made up of individuals, and 20.6% had someone living alone who was 65 years of age or older.