Ainsworth is a city in Washington County, Iowa, United States.

[5] According to the United States Census Bureau, the city has a total area of 0.38 square miles (0.98 km2), all of it land.

There were 210 housing units at an average density of 569.4 per square mile (219.8/km2).

Hispanic or Latino persons of any race comprised 20.5% of the population.

There were 218 housing units at an average density of 573.7 per square mile (221.5/km2).

21.5% of all households were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older.

There were 208 housing units at an average density of 548.2 per square mile (211.7/km2).

28.1% of all households were made up of individuals, and 14.1% had someone living alone who was 65 years of age or older.

The district previously operated Ainsworth Elementary School, which closed in 2017.

District leadership stated that it would have had to spend upkeep of $50,000 if it remained open.