Mount Auburn is a city in Benton County, Iowa, United States.

Mount Auburn was platted in 1871 when the Burlington, Cedar Rapids and Minnesota Railway was extended to that point.

[3][4] According to the United States Census Bureau, the city has a total area of 0.28 square miles (0.73 km2), all land.

There were 68 housing units at an average density of 276.4 per square mile (106.7/km2).

Hispanic or Latino persons of any race comprised 2.5% of the population.

The racial makeup of the city was 98.0% White, 1.3% Native American, and 0.7% from two or more races.

26.6% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 91.88% White, 3.12% Native American, 1.25% Asian, and 3.75% from two or more races.

21.0% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older.