Below is a list of Charlton MA zip codes. For your research we have also included Charlton Area Code, Time Zone, UTC and the local Worcester County FIPS Code. Each Charlton Massachusetts zip code has a center Longitude / Latitude point (the Charlton center is -71.969902038574 / 42.135898590088). For your convenience we have also indicated if that zip code in Charlton observes Daylight Savings time.