This series is calculated by FRB-St. Louis using data from the Bureau of Labor Statistics. The FRB-Boston District includes all of Massachusetts, Maine, New Hampshire, Rhode Island, Vermont and Connecticut(excluding Fairfield County).
Source: US. Bureau of Labor Statistics
US. Bureau of Labor Statistics, Unemployment Rate in FRB-Boston District (DISCONTINUED) [D1URN], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/D1URN, May 6, 2016.