| Business | Phone |
| Affordable Lock & Key 346 Boston Rd, North Billerica 1862 | (978) 663-9908 |
| All Day Emergency Locksmith 312 Boston Rd, North Billerica 1862 | (978) 826-2431 |
| All Day Emergency Locksmith 95 Boston Rd, North Billerica 1862 | (978) 826-2770 |
| Mc Adams Lock & Safe Inc 11 Alpine St, North Billerica 1862 | (978) 667-8686 |
| Hour 7 Day A Emerg Locksmith 1 8 Chelmsford Rd, North Billerica 1862 | (978) 826-2774 |