To request a new mailbox key, first figure out who owns the mailbox. If it belongs to the U.S. Postal Service (a PO Box, a neighborhood cluster box unit, or a centralized receptacle installed by USPS), you’ll go to the Post Office that services your box, show ID, fill out PS Form 1094, and pay a fee. If the mailbox is privately owned (a curbside box at a house, or a bank of boxes maintained by a landlord, apartment complex, or HOA), you contact the property owner or manager instead. Either way, plan on a small fee and a wait of anywhere from same-day to about two weeks.
Who Owns the Mailbox
This is the fork in the road, and getting it wrong wastes a trip.
USPS controls PO boxes inside a Post Office, cluster box units in many neighborhoods and subdivisions, and centralized mail receptacles at apartment or condo communities where the Postal Service installed the equipment. For any of these, the local Post Office handles lock and key service.1United States Postal Service. Mailboxes – The Basics
Everything else is private. That includes curbside or wall-mounted boxes at single-family homes (the homeowner’s responsibility) and mailbox banks owned or maintained by a landlord, apartment complex, or condo association (the management entity’s responsibility). If you can’t tell which category your cluster box falls into, ask your property manager or call your local Post Office before making the trip.
Requesting a Key From USPS
Go in person to the Post Office that services your box. Ask for PS Form 1094, “Request for Post Office Box Key or Lock Service.”2United States Postal Service. Forms Glossary Fill in your name, address, box number, and the reason for the request. Hand it over with your ID and the fee.
What ID to Bring
USPS wants one primary photo ID and one secondary ID that confirms your address. Primary options include a valid driver’s license, state ID card, passport, military or government ID, or a university or recognized corporate ID. Secondary options include a voter or vehicle registration card, home or vehicle insurance policy, mortgage or deed of trust, or a current lease.3United States Postal Service. PO Box Help Social Security cards, credit cards, and birth certificates are not accepted.
Fees
There is no single nationwide price. Costs depend on local pricing and on whether you need a duplicate key or a full lock change. For PO Boxes, you’ll pay a refundable key deposit plus a non-refundable key fee. If every key to the box is lost, the lock has to be replaced and the charge covers the new hardware and keys.4United States Postal Service. Postal Bulletin 22118 – Refunds for Post Office Box Keys Call your Post Office ahead of time to confirm the amount.
One exception is worth knowing. If your key is worn out or broken rather than lost, USPS replaces it at no charge, provided you turn in the damaged key at the Post Office where your box is located.5United States Postal Service. Domestic Mail Manual D910 Post Office Box Service A key that barely turns is free. A key that’s gone is not.
How Long It Takes
A duplicate key can sometimes be cut the same day. A lock change usually takes several days to two weeks, and busy urban offices run longer. Ask the clerk for a timeline when you submit the form.
Requesting a Key From a Landlord or HOA
Call the management office, submit a maintenance request through your building’s portal, or stop by the office. This is usually faster than the USPS process because the management company can either issue a spare from their own stock or call a locksmith directly.
Fees vary. Some landlords absorb the cost. Others charge somewhere between $10 and $50, more if the lock has to be changed entirely. Check your lease before you pay: it will usually spell out who covers a lost-key replacement, and that party is usually you. Bring a photo ID; the office likely has your lease already.
If You Own the House and the Mailbox
USPS does not maintain curbside or wall-mounted boxes at single-family homes.1United States Postal Service. Mailboxes – The Basics Your options are to contact the mailbox manufacturer for a replacement key, hire a locksmith to rekey the lock, or buy a new locking mailbox. Replacement locks for common residential mailboxes run $10 to $25 at most hardware stores and are straightforward to install.
Getting Your Mail While You Wait
Bills, medications, checks, and legal notices keep coming while you’re waiting on a new key. Two options bridge the gap.
Hold your mail. USPS Hold Mail pauses delivery and stores everything at the local Post Office for a minimum of 3 days and a maximum of 30. Set it up through your USPS.com account on the Hold Mail page (you’ll verify your identity the first time) or in person at the Post Office.6United States Postal Service. Hold Mail – Pause Mail Delivery Online For a same-day start, submit the request by 3 AM Eastern.
Pick up at the counter. Bring your photo ID to your local Post Office and ask for your mail. For PO Box customers, the clerk can pull the contents of the box and hand them over. This is fine for short waits but tedious if the lock replacement drags on.
Do Not Tamper With a USPS Mailbox
When the process feels slow, do not call a locksmith to open a USPS-owned box, and do not force the compartment yourself. USPS cluster boxes and PO boxes are federal property, and mailboxes are protected by federal law. Tampering with, damaging, or making unauthorized changes to a USPS mailbox is a federal offense under 18 U.S.C. ยง 1705. A conviction for destruction of federal property can carry up to three years in prison and a fine of up to $250,000.7United States Postal Inspection Service. Mailbox Vandalism Even a locksmith acting in good faith on a USPS box can trigger a tampering issue. Use the Form 1094 process and rely on Hold Mail or counter pickup in the interim.
If You Just Moved In
New tenants and homebuyers sometimes find that no key was left behind or the old one doesn’t work. For a USPS-owned box, the Post Office changes the lock before assigning the compartment to a new resident, and the first set of keys is not charged to the new customer. Bring ID and proof of your new address to the Post Office that services the box. For a privately managed mailbox, ask your landlord or property manager for keys at move-in and test them the same day so any replacement can start before mail begins piling up.