Donnellson (/ˈdɒnəlsən/ DON-əl-sən) is a city in Lee County, Iowa, United States.

What would be Donnellson was first surveyed by H. A. Summers for Esten Donnell, for who the town would be named.

[5] Esten’s son, W. R. Donnell helped construct the first buildings in Donnellson, and served as the railroad agent and post master.

[8] Donnellson is home to the Lee County Speedway, a 3⁄8-mile (0.60 km) dirt oval racetrack.

[10] According to the United States Census Bureau, the city has a total area of 1.26 square miles (3.26 km2), all land.

There were 404 housing units at an average density of 317.4 per square mile (122.6/km2).

There were 415 housing units at an average density of 329.4 per square mile (127.2/km2).

35.4% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older.

There were 415 housing units at an average density of 520.9 per square mile (201.1/km2).

27.5% of all households were made up of individuals, and 14.8% had someone living alone who was 65 years of age or older.