Can You Copy a Mailbox Key?
Yes, you can copy a mailbox key in many situations, but it depends on who owns the mailbox and what type of lock it uses. Some mailbox keys can be duplicated using approved key duplication methods, while others, particularly those controlled by the U.S. Postal Service, cannot legally be copied. Understanding the difference helps ensure your mailbox remains secure and compliant.
“The first step is always determining who controls the mailbox. That determines whether duplication is allowed or whether the lock itself must be replaced.” - KeyMe Locksmiths
Why Mailbox Key Duplication Comes Up So Often
Mailbox keys are frequently duplicated because:
- Keys are thin and wear down over time
- Multiple household members need access
- Tenants or roommates change
- Original keys are misplaced
Mailbox locks also experience more environmental exposure than most residential locks, which contributes to key and lock issues.
When You Can Copy a Mailbox Key
Privately Owned Mailboxes
If your mailbox is privately owned, key duplication is usually permitted.
Examples include:
- Individual curbside mailboxes
- Wall-mounted residential mailboxes
- Apartment or condo mailboxes owned by the property owner or HOA
In these cases, standard mailbox keys can often be duplicated using approved key duplication methods.
Standard, Non-Restricted Mailbox Keys
Many mailbox keys are not restricted or patented, which allows them to be copied when permitted by the mailbox owner.
Locksmiths often recommend duplicating mailbox keys before they show visible wear, as worn keys are more likely to cause lock issues.
When You Cannot Copy a Mailbox Key
USPS-Owned Cluster Mailboxes (CBUs)
If your mailbox is part of a USPS-owned cluster mailbox unit, the key cannot be copied.
Important to know:
- The USPS owns and controls the lock and key
- Duplication by kiosks or locksmiths is not permitted
- This restriction helps protect mail security and prevent unauthorized access
“If the post office controls the lock, only the post office can issue or replace the key.” - KeyMe Locksmiths
If a USPS mailbox key is lost, the post office must be contacted to address access.
How to Tell If Your Mailbox Key Can Be Copied
Ask yourself:
- Is the mailbox part of a neighborhood cluster unit?
- Does the post office control access or maintenance?
- Is there USPS labeling on the mailbox or lock?
If so, duplication is not allowed. If not, copying the key may be an option.
Where Mailbox Keys Are Commonly Duplicated
Self-Service Key Duplication Kiosks
Best suited for:
- Standard mailbox keys
- Situations where duplication is permitted
- Quick identification of supported key types
If a key is not supported, the kiosk will indicate that clearly.
Find a KeyMe kiosk: https://key.me/kiosks
Professional Locksmiths
A locksmith may be the right option when:
- The key is damaged or bent
- A key broke inside the lock
- The lock itself needs to be replaced
- Ownership or authorization needs to be verified
Residential locksmith services: https://key.me/residential-locksmith
What If You Lost Your Only Mailbox Key?
When no working key is available:
- Mailbox locks are typically replaced, not rekeyed
- New keys are issued with the replacement lock
- This ensures previous keys no longer provide access
This is often recommended if keys are unaccounted for or there are concerns about unauthorized access.
Best Practices for Mailbox Key Security
- Duplicate keys before they become worn
- Avoid forcing keys that feel stiff
- Lubricate mailbox locks periodically with approved products
- Replace the lock if keys are lost
- Never label mailbox keys with identifying information
FAQs
Can a locksmith copy any mailbox key?
Only if the mailbox is privately owned and the key is not restricted.
Can USPS mailbox keys be duplicated anywhere?
No. USPS-controlled mailbox keys must be handled through the post office.
Is it better to copy a mailbox key or replace the lock?
That depends on whether keys are lost, worn, or potentially compromised.
Are kiosk-made mailbox keys reliable?
Modern kiosks use digital scanning to create consistent duplicates when duplication is permitted.
Final Thoughts
Whether a mailbox key can be copied depends entirely on mailbox ownership and lock restrictions. Privately owned mailboxes often allow duplication, while USPS-controlled mailboxes do not. Knowing which category your mailbox falls into helps you choose the correct, and compliant, next step.
Need help identifying your mailbox key type? Visit a KeyMe kiosk
Need lock assistance or replacement? Contact KeyMe Locksmiths
About KeyMe Locksmiths
KeyMe Locksmiths is a leading provider of local locksmith services and key copy kiosks across 50 states and the District of Columbia. Proud to serve over 5 million customers, KeyMe Locksmiths cuts over 10 million keys annually. With more than 7,500 self-service kiosks in major retailers, an e-commerce platform delivering over 10,000 keys weekly, and a nationwide locksmith network, KeyMe Locksmiths provides fast, reliable solutions for residential, commercial, and vehicle needs. KeyMe Locksmiths is committed to delivering exceptional service backed by a 100% money-back guarantee. KeyMe Locksmiths also operates one of the nation’s leading retail media networks, connecting consumers to other brands seeking to advertise in-store and delivering over 2B monthly impressions.