Dundee is a city in Delaware County, Iowa, United States.

[5] According to the United States Census Bureau, the city has a total area of 0.36 square miles (0.93 km2), all land.

There were 82 housing units at an average density of 260.2 per square mile (100.5/km2).

There were 88 housing units at an average density of 244.4 per square mile (94.4/km2).

43.0% of all households were made up of individuals, and 20.3% had someone living alone who was 65 years of age or older.

There were 88 housing units at an average density of 217.2 per square mile (83.9/km2).

28.8% of all households were made up of individuals, and 17.5% had someone living alone who was 65 years of age or older.

About 8.3% of families and 9.8% of the population were below the poverty line, including 4.9% of those under the age of eighteen and 21.7% of those 65 or over.