Massachusetts House of Representatives' 12th Essex district in the United States is one of 160 legislative districts included in the lower house of the Massachusetts General Court.
It covers part of the city of Peabody in Essex County.
[1][2] Democrat Tom Walsh of Peabody has represented the district since 2017.
[3] The current district geographic boundary overlaps with that of the Massachusetts Senate's 2nd Essex district.
[4] The district previously covered South Danvers, circa 1872.