Area Code Lookup
What Area Code Is Billerica?
Area code 978 · Massachusetts
Billerica uses area code 978. It is located in Massachusetts.
Area Code Serving Billerica
Frequently Asked Questions
What area code is Billerica?
Billerica uses area code 978. It is located in Massachusetts.
How do I call Billerica from outside the US?
To call Billerica from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-978-XXX-XXXX). The +1 is the country code for all NANPA countries.