Every branch sets its own rent and its own package allowance.
What sets the price
PostalAnnex's corporate site describes the mailbox product — a street address, package acceptance from UPS, FedEx and other couriers held secure until you arrive, and two locks between the street and your mail — without publishing what any of it costs. Checked 2026-08-31: the private mailbox rental overview, the business mailboxes overview, and location pages for Sacramento, San Jose and El Paso all left pricing to a phone call or a store visit.
| Variable | What PostalAnnex states |
|---|---|
| Ownership | Each location is independently owned and operated, so rates are set locally rather than by the franchisor |
| Box size / names on the box | Tiers are sold by size and by how many names can receive mail at that box, not by a flat per-box rate |
| Package volume included | Each tier bundles a monthly package count before per-package charges start |
| Payment term | Shorter terms cost more per month than paying for a full year up front |
| How to get your own number | PostalAnnex directs shoppers to contact or visit the specific store, the same pattern our PO Box cost guide found at the UPS Store |
One location's published tiers
PostalAnnex Irvine is one of the few franchisee sites that lists physical mailbox pricing in a static table rather than behind a phone call. These are its numbers, read 2026-08-31, for context on what the product costs where a branch chooses to disclose it.
| Tier | Box / package allowance | 12-month term | 6-month term |
|---|---|---|---|
| Small | 4 x 5 in, 2 names, 10 packages/month | 300 USD paid up front 25 USD/month | 168 USD paid up front 28 USD/month |
| Medium | 5 x 6 in, 3 names, 20 packages/month | 420 USD paid up front 35 USD/month | 228 USD paid up front 38 USD/month |
| Large | 8 x 11 in, 4 names, 30 packages/month | 540 USD paid up front 45 USD/month | 288 USD paid up front 48 USD/month |
The pattern worth noting has nothing to do with the dollar figures themselves: every tier is cheaper per month on the longer term, which is the opposite of how USPS prices a PO Box, where the size and the branch set the rent and the term mostly just changes how often you pay it.
What runs the bill up past the base plan
Opening the box
PostalAnnex Irvine charges a 15 USD one-time setup fee and a 10 USD key deposit on top of the first term's rent, read 2026-08-31.
Packages past the allowance
Each tier's included package count is a ceiling, not an average. At the location checked, going over it costs 1 USD per additional package.
Forwarding mail onward
Asking the store to mail your held items to another address is billed apart from the monthly rent: 5 USD per shipping bundle plus postage, at the location checked.
What the sign-up itself involves
Opening a private mailbox is a CMRA transaction, not a Post Office counter visit. PostalAnnex's own private mailbox rental page states that a renter must “Complete USPS Form 1583 provided at the store,” and that a photocopy of identification may be retained by the store as USPS requires. That is the same federal form our virtual mailbox vs PO Box guide covers for virtual mailbox providers — a physical CMRA box at a pack-and-ship store runs through the identical paperwork, notarized or witnessed in real time, before the store can accept mail on the renter's behalf.
A USPS PO Box skips the notary requirement entirely and uses PS Form 1093 instead, which our PO Boxes Online guide covers. The two products are not interchangeable paperwork, even though both end in a box with your name on it.
Where these figures come from
- PostalAnnex, Private Mailbox Rental Services — product features, courier acceptance and the Form 1583 requirement. No pricing shown. Read 2026-08-31.
- PostalAnnex, Business Mailbox Rentals — franchise ownership note, no pricing shown. Read 2026-08-31.
- PostalAnnex Irvine, Plans & Pricing — the physical mailbox tiers, setup fee, key deposit, extra-package and forwarding fees quoted above. Read 2026-08-31.
Sacramento, San Jose and El Paso PostalAnnex location pages were also checked for this guide and none of the three published pricing, which is itself the point: ask the branch you would actually use before budgeting from any figure on this page, including PostalAnnex Irvine's.
PostalAnnex cost, answered
How much does a PostalAnnex mailbox cost?
PostalAnnex does not publish one national price; franchisees set their own rates. At one location checked 2026-08-31, the smallest physical mailbox ran 25 USD a month paid annually (300 USD for the year) and the largest ran 45 USD a month paid annually (540 USD for the year), on top of a 15 USD one-time setup fee.
Does paying monthly cost more than paying for the year?
At the location checked, yes. Every tier was cheaper per month on the 12-month term than on the 6-month term: the small box ran 25 USD a month annually versus 28 USD a month semi-annually, and the same gap held on the medium and large tiers.
Is there a limit on packages before extra charges kick in?
Yes, at the location checked. Each tier bundled a monthly package count into the price — 10, 20 or 30 packages depending on size — and packages past that count billed at 1 USD each. Mail forwarding is billed separately at 5 USD per shipping bundle plus postage.
Is a PostalAnnex box the same thing as a USPS PO Box?
No. A PostalAnnex box is a Commercial Mail Receiving Agency address with a real street address and a suite or box number, opened on a notarized USPS Form 1583, and any carrier can deliver to it. A USPS PO Box is a locker at a Post Office, opened on PS Form 1093, and only USPS can put mail in it.
Why doesn't PostalAnnex's own website show prices?
Because every location is independently owned and franchisees set their own rates. The corporate pages checked for this guide, including the private mailbox rental overview and three location pages, carried no pricing at all — only a franchisee's own local site did.