Hingham is a town in northern Plymouth County in the U.S. state of Massachusetts. Part of the Greater Boston region, it is located on the South Shore of Massachusetts. At the 2020 census, the population was 24,284. Hingham is known for its colonial history and location on Boston Harbor. The town was named after Hingham, Norfolk, England, and …Hingham is a town in northern Plymouth County in the U.S. state of Massachusetts. Part of the Greater Boston region, it is located on the South Shore of Massachusetts. At the 2020 census, the population was 24,284. Hingham is known for its colonial history and location on Boston Harbor. The town was named after Hingham, Norfolk, England, and was first settled by English colonists in 1633.