01821 postal code
United StatesUpdated 2026-11-09Billerica, MassachusettsMiddlesex5 digits
Postal code details
1 placeCode
01821
Place
Billerica
Region
Massachusetts
County
Middlesex
Coordinates
42.5519, -71.2518
Accuracy
4 / 6
Country
United States
Location
OpenStreetMap ↗
42.5519, -71.2518© OpenStreetMap
Ad slot · 300×250
Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| Billerica | Massachusetts | Middlesex | 42.5519, -71.2518 |
Same code in other countries
4| Country | Place | Region |
|---|---|---|
| KR South Korea | 노원구 | 서울특별시 |
| PE Peru | Huampami | Amazonas |
| PL Poland | Warszawa | Mazovia |
| SK Slovakia | Dolný Lieskov | Trencin |
FAQ
Which city is 01821 in?
Billerica, Massachusetts, United States.
What are the coordinates of 01821?
42.5519, -71.2518
Is 01821 used in other countries?
Yes, 4 other countries.
Updated 2026-11-09. Attribution in Data & license.