| Official Name: | Chapin, Iowa |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Iowa |
| Pushpin Label: | Chapin |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | Franklin |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.26 |
| Area Land Km2: | 0.26 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.10 |
| Area Land Sq Mi: | 0.10 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 71 |
| Population Density Km2: | 278.15 |
| Population Density Sq Mi: | 717.17 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1155 |
| Coordinates: | 42.8336°N -93.2222°W |
| Area Code: | 641 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 455347 |
Chapin is an unincorporated community and census-designated place in northern Franklin County, Iowa, United States. It lies along local roads just off U.S. Route 65, north of the city of Hampton, the county seat of Franklin County.[2] Its elevation is 1,155 feet (352 m), and it is located at 42.8336°N -93.2222°W (42.8335814, -93.2221464). Although Chapin is unincorporated, it has a post office with the ZIP code of 50427,[3] which opened on 29 February 1860. As of the 2010 census, its population was 87.[4]
Chapin was platted in 1858 by Josiah Bushnell Grinnell, who had previously founded Grinnell, Iowa. He gave this new town the name Chapin, the maiden name of his wife.[5] The population was 150 in 1940.[6]
Chapin is part of the West Fork Community School District, formed in 2011 by the merger of the Sheffield–Chapin–Meservey–Thornton (SCMT) Community School District and the Rockwell–Swaledale Community School District. SCMT was formed in 2007 by the merger of the Sheffield–Chapin Community School District and the Meservey–Thornton Community School District.[7] Sheffield–Chapin, in turn, formed in 1960 from the merger of the Sheffield Community School District and the Chapin Community School District.[8]