Harvey is a city in Marion County, Iowa, United States.

[3] According to the United States Census Bureau, the city has a total area of 0.68 square miles (1.76 km2), all of it land.

There were 118 housing units at an average density of 174.3 per square mile (67.3/km2).

There were 117 housing units at an average density of 172.1 per square mile (66.4/km2).

The racial makeup of the city was 97.4% White, 0.4% Native American, 1.3% Asian, and 0.9% from other races.

36.7% of all households were made up of individuals, and 16.5% had someone living alone who was 65 years of age or older.

22.5% of all households were made up of individuals, and 7.2% had someone living alone who was 65 years of age or older.

19.2% of the population and 18.7% of families were below the poverty line, including 14.5% of those under the age of 18 and 21.4% of those 65 and older.