To get a mailbox key from the post office, you need to visit your local USPS branch in person — there's no online option. Bring a valid photo ID, proof of your current address, and be ready to fill out PS Form 1094. The process takes 10 minutes at the counter, then 3 to 10 business days for the key to be ready.
Here's the full process depending on your situation.
Step-by-Step: How to Get Your USPS Mailbox Key
Step 1 — Find the Right Post Office
You must contact the USPS branch that services your specific address, not just any nearby location. Use the official USPS Post Office locator at usps.com to find the correct office. Calling ahead to confirm hours and appointment requirements saves you a wasted trip — some branches require appointments for Form 1094 processing.
Step 2 — Bring the Right Documents
USPS requires two things to issue a mailbox key:
- A valid government-issued photo ID — driver's license, passport, or state ID
- Proof of your current address — lease agreement, utility bill, mortgage statement, or official mail received at that address
Both documents must match the address of the mailbox you're requesting access to. If your ID shows a different address, bring additional supporting documents.
Step 3 — Fill Out PS Form 1094
PS Form 1094 is the official USPS Application for Keys or Lock Change. You can fill it out at the post office counter or download PS Form 1094 directly from usps.com and bring a completed copy to speed up the process.
The form asks for your name, the mailbox address, and the reason for your request — new resident, lost key, or lock change.
💡 Tips : Download and fill out PS Form 1094 before you visit. It takes about 2 minutes and cuts your time at the counter significantly.
Step 4 — Pay the Fee
USPS charges a non-refundable fee for key replacements and lock changes. Fees vary by location but typically fall in this range:
| Request Type | Typical Fee | Processing Time |
|---|---|---|
| New resident — first keys | Free or $0–$10 | 3–7 business days |
| Lost key replacement | $20–$35 | 3–10 business days |
| Full lock change | $20–$50 | 5–10 business days |
Always confirm the exact fee with your local branch before visiting — prices are not standardized across all USPS locations.
Step 5 — Pick Up Your Key
USPS will notify you when your key is ready — usually by phone or mail. You must pick it up in person and sign for it. Bring the same photo ID you used when submitting the request.
⚠️ Warning : USPS typically provides only two keys with a new lock or replacement. If you need a third key for a family member, request it at the same time — adding it later requires a separate fee and process.
What to Do If You Live in an Apartment
In most apartment complexes, mailbox keys are managed by the property management or landlord — not USPS directly. Before going to the post office, contact your leasing office first.
If the property manager confirms that your mailbox is USPS-owned, then follow the same Form 1094 process above. If the mailbox is privately managed by the building, the landlord is responsible for issuing your key — USPS cannot help in that case.
✅ Advice : When moving into a new apartment, ask the leasing office on day one whether mailbox keys come from them or from USPS. It saves you a wasted post office trip if the answer is the former.
What to Do If Your Key Is Lost or Stolen
A lost key requires a lock change — not just a key copy. USPS cannot issue a new key for an existing lock without proof that you're the current resident, and for security reasons they will change the lock entirely.
The process is the same as above — Form 1094, photo ID, proof of address, and the applicable fee. Once the lock change is scheduled, a USPS technician visits your mailbox location. You don't need to be present for the lock change itself, but you do need to pick up the new keys in person.
Report a stolen key immediately. According to the USPS Postal Inspection Service, mail theft is a federal crime — if someone has your key and your address, they have access to checks, credit cards, and identity documents delivered to your mailbox.
⚠️ Warning : Never leave a note on your mailbox saying you've lost your key or are waiting for a replacement. It signals to opportunists that your mailbox is currently unsecured.
When to Replace Your Own Lock Instead
If your mailbox is privately owned — a standalone curbside box or wall-mounted box that you installed yourself — you don't need USPS at all. You can replace the lock yourself in 5 minutes with a standard cam lock from a hardware store.
Most residential mailbox locks use a 5/8 inch or 3/4 inch cam lock, available for $15 to $25. Our Mailbox Lock collection has replacement options in both sizes starting at $14.90 — cheaper than a locksmith service call and faster than waiting 10 business days for USPS.
✅ Advice : If you own your mailbox and have lost the key, skip the post office entirely. A $15 cam lock replacement takes 5 minutes and gives you full control over who has access.
Keyless Option: Never Deal With Keys Again
If you own your mailbox and want to eliminate the key problem permanently, a keyless digital lock is worth considering. Our Digital Lock for Mailbox uses a push-button combination code, installs in under 10 minutes, and fits most standard residential mailbox door thicknesses between 1 and 2 inches.
No more post office visits, no more replacement fees, no more waiting 10 days for a key.
💡 Tips : A keyless lock is only an option for privately owned mailboxes. USPS-managed cluster boxes and CBU units must keep their standard USPS lock — you cannot replace them yourself.
FAQ
How long does it take to get a mailbox key from the post office? Between 3 and 10 business days after submitting Form 1094, depending on your location and whether a lock change is needed. Some post offices process replacements faster — call ahead to get an estimate for your specific branch.
How much does a USPS mailbox key replacement cost? Typically $20 to $35 for a replacement key, and $20 to $50 for a full lock change. New residents moving into a property for the first time may receive their first set of keys at no charge. Fees vary by location.
Can I get a USPS mailbox key without going in person? No. USPS requires in-person verification with photo ID and proof of address for all mailbox key requests. There is no online or phone option for security reasons.
What if I just moved in and there's no mailbox key at all? Visit your local USPS branch with your lease agreement and photo ID. If the mailbox is USPS-owned, they will issue you a new set of keys, often at no charge for new residents. If the mailbox is privately owned by the building, contact the property manager instead.
Can I copy my USPS mailbox key at a hardware store? No. USPS-issued keys are stamped "Do Not Duplicate" and use restricted key blanks not available in standard hardware store inventory. All replacements must go through USPS via Form 1094.
How many keys does USPS provide with a lock change? Typically two keys. If you need a third for another household member, request it at the same time as your initial Form 1094 submission — adding keys later requires a separate request and additional fee.
What if my post office says they can't help me? Ask specifically for the delivery supervisor or postmaster at your branch. Counter staff sometimes incorrectly redirect residents. The postmaster has authority to process Form 1094 requests directly.
