Westwood is a town in Norfolk County, Massachusetts, United States. The population was 14,618 at the 2010 census. In July 2005, CNN/Money and Money magazine ranked Westwood 13th on its list of the 100 Best Places to Live in the United States. Boston Magazine included Gay Street in Westwood on its list of the Best Streets in the Boston area. It is the 9th wealthiest town in the state of Massachusetts.