The story
The county is named after the island of Nantucket.
Etymology from Wiktionary, CC BY-SA 4.0.
Nantucket County
Nan·tuc·ket Coun·tyToday it means: One of 14 counties in Massachusetts, United States, located on the island of Nantucket and two other islands. It is coterminous with the town of Nantucket, and is known as the Town and County of Nantucket. Full definition →