Chapin is an unincorporated community and census-designated place in northern Franklin County, Iowa, United States.

[7] As of the census of 2020,[9] there were 71 people, 38 households, and 18 families residing in the community.

There were 40 housing units at an average density of 405.9 per square mile (156.7/km2).

Hispanic or Latino persons of any race comprised 5.6% of the population.

This article about the geography of Franklin County, Iowa is a stub.