Area Code Lookup
What Area Code Is East Boston?
Area code 857 · Massachusetts
East Boston uses area code 857. It is located in Massachusetts.
Area Code Serving East Boston
Frequently Asked Questions
What area code is East Boston?
East Boston uses area code 857. It is located in Massachusetts.
How do I call East Boston from outside the US?
To call East Boston from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-857-XXX-XXXX). The +1 is the country code for all NANPA countries.