About ZIP code 01821
The ZIP code 01821 routes mail to Billerica in the Massachusetts region of United States. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
United States · ZIP code
01821 - Billerica
ZIP code 01821 is Billerica in Massachusetts, United States.
| ZIP code | 01821 |
| Place | Billerica |
| Region | Massachusetts |
| District | Middlesex |
| Country | United States (US) |
| Coordinates | 42.5519, -71.2518 (map) |
Nearby codes
Frequently Asked Questions
ZIP code 01821 explained
Which city is ZIP code 01821 in?
ZIP code 01821 is Billerica in Massachusetts, United States.
What are the coordinates of 01821?
The approximate centre of 01821 is at latitude 42.5519, longitude -71.2518.
Data updated · About & Data Sources