Chapin, Idaho
Chapin is an unincorporated community in Teton County, in the U.S. state of Idaho. History
A post office called Chapin was established in 1896, and remained in operation until 1912. According to tradition, the community was named after one Mr. Chapin, a pioneer citizen. Chapin's population was 125 in 1909. References

Unincorporated communities in Teton County, Idaho