Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Norfolk County is a county located in the U.S. state of Massachusetts. As of 2000, the population was 650,308. Its county seat is Dedham. It is the 48th highest income county in the United States with a per capita income of $32,484. The county was named after Norfolk, England, and means "northern folk." Norfolk County, Massachusetts was created on March 26, 1793 by legistation signed by Gov. John Hancock. Most of the towns were originally part of Suffolk County, Massachusetts.