In which states is your last name most common ?

[The Other Castro]

78 people have my last name, and I wouldn't be surprised if it's all people in my family. It has an unusual spelling caused by an error at Ellis Island, so it doesn't really have natural spelling roots. The 77 people in the state level map are only in states where I have known family living, so that's probably my family members with the exception of one person from Brazil.