code(s) 617 / 857 FIPS code 25-45560 GNIS feature ID 0617675 Website http://www.ci.newton.ma.us/ Emily Lavan, Heartbreak Hill, 2005 Boston Marathon Newton is a city in Middlesex County , Massachusetts bordered to the east by Boston . According to the 2000 census , the population of Newton was 83,829, making it the tenth