Duncan, Iowa

Duncan is a census-designated place (CDP) in Hancock County, Iowa, United States. The population was 131 at the 2010 census.

History
Duncan was platted in 1900. The community's population was 25 in 1902, and 20 in 1925. The population was 75 in 1940.

Geography
Duncan is located at 43.10444°N, -93.71111°W, 4.6 mi east of Britt and 5.4 mi west of Garner, along U.S. Route 18.

According to the United States Census Bureau, the CDP has a total area of 2.05 sqkm, of which 2.03 sqkm is land and 0.02 sqkm, or 0.90%, is water.

Education
Duncan is a part of the Garner–Hayfield–Ventura Community School District. It was previously in the Garner–Hayfield Community School District, which merged into the current GHV district on July 1, 2015.