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Home > Guides > PO box vs street address
Use a PO box when you want privacy and a stable mailing address: it keeps your home address off your mail and never moves when you do. Use your street address for courier parcels, since UPS and FedEx generally can't deliver to PO boxes. Many people use both: PO box for letters, street address for parcels.
A PO box is a locked mailbox at the post office, and its two big advantages are privacy and permanence. Your home address never appears on your mail, which matters for freelancers, landlords, small businesses, and anyone who'd rather not broadcast where they sleep. And the box stays put when you move across town: update your address once in your own records, and the mail keeps flowing to the same box.
There's a security angle too. Mail sits inside a locked box in a staffed building instead of a curbside box anyone can open, which makes theft much harder. Mail theft from curbside boxes is one of the most common ways checks and account information get stolen; a PO box takes that target off the street entirely. For rural addresses where the mailbox sits far from the house, this alone can justify the rental.
| Factor | PO box | Street address |
|---|---|---|
| Privacy | Home address stays off your mail | Your address appears on everything you receive |
| Courier parcels (UPS, FedEx) | Generally can't be delivered to a PO box | Delivered to your door |
| Theft risk | Low: locked box inside the post office | Higher: curbside box anyone can open |
| Moving | Keep the same box; no mail disruption | File a change of address and hope forwarding catches everything |
| Availability | You rent it; small boxes cost less, and there's a waitlist at busy offices | Free, since you already live there |
The big limitation is parcels. UPS and FedEx drivers can't deliver into PO boxes, because the boxes belong to the postal service. So if you order much online, a PO box alone leaves you stranded: the courier needs a street address. Some businesses also won't accept a PO box as a billing or registration address, and a few government forms require a physical address for identity verification.
There's a workaround worth knowing: USPS offers a feature called Street Addressing at many post offices, which lets PO box holders receive courier parcels addressed to the post office's street address plus their box number. It turns the box into a parcel-friendly address. Not every location offers it, and Canada Post's parcel setup works differently, so ask your local office what exists before you count on it.
Pick the PO box if privacy or mail security is your priority, or if you move often and want an address that survives every move. Pick the street address if you mostly receive packages, or if you just want the simplest setup with no rental fee. And consider the hybrid most frequent online shoppers land on: PO box for letters, bills, and anything sensitive; street address for parcels. The two addresses can coexist without conflict, and each one does the job it's best at.
Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it's printed and mailed.
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