If a form asks where you live, a PO Box usually doesn't fit. The U.S. Postal Service (USPS) checks your permanent physical address before it opens a box. If a form asks where you get mail, a box is a normal answer. The federal voter form prints the two lines separately.
A PO Box is a rented Post Office box with a box number. We read the following texts on October 30, 2026: the National Mail Voter Registration Form, Form I-9 and its instructions, the employer handbook for Form I-9, and PS Form 1093, the PO Box application. We also read one USPS frequently asked questions (FAQ) page and two sections of the Domestic Mail Manual (DMM), the rulebook for USPS services.
What does a form mean by a permanent address?
The federal voter form doesn't use the words "permanent address." We searched all 27 pages of the National Mail Voter Registration Form for the word "permanent" and found 0 matches. The form asks for your "home address (legal address)" instead.
USPS does use the phrase, and it uses it to describe what stands behind a PO Box. The USPS FAQ page "PO Box The Basics" says:
"You may apply for a PO Box in person at a Post Office™ or online at USPS.com®. An application process for PO Box service is not completely approved until your identity and current permanent physical address where you reside or conduct business is verified."
Put simply, a PO Box needs a permanent address behind it. The address can be where you live or where you run a business, and USPS verifies it before approval is complete.
How does the federal voter form split home and mail?
The U.S. Election Assistance Commission publishes the National Mail Voter Registration Form. On the form face, field 2 is labeled "Home Address." Field 3 is labeled "Address Where You Get Your Mail If Different From Above."
The application instructions explain both boxes. For Box 2, Home Address, they say:
"Put in this box your home address (legal address). Do not put your mailing address here if it is different from your home address. Do not use a post office box or rural route without a box number. Refer to state-specific instructions for rules regarding use of route numbers."
For Box 3, Mailing Address, they say:
"If you get your mail at an address that is different from the address in Box 2, put your mailing address in this box. If you have no address in Box 2, you must write in Box 3 an address where you can be reached by mail."
Read the two boxes side by side. Box 2 asks where you live and names the post office box as something not to use there. Box 3 asks where you get mail, and its instruction text sets no such limit. The phrase "without a box number" belongs to rural routes, not to post office boxes. The Box 2 text also sends you to each state's instructions for route numbers. We did not read every state's page, so we make no claim about what any one state allows.
For the home line, a person with no street address is not sent to a PO Box. Box C on the form face says: "If you live in a rural area but do not have a street number, or if you have no address, please show on the map where you live." The same box asks you to "Write in the names of the crossroads (or streets) nearest to where you live."
We counted every mention of a post office box across all 27 pages of the form, and there are 18. Only 1 of them is an instruction to you, the Box 2 line quoted above. The other 17 are mailing addresses of state election offices, printed in the state instructions as the place to send the form. The Alabama entry reads, for example, "Mailing address: Office of the Secretary of State P.O. Box 5616 Montgomery, AL 36103-5616."
The same form that keeps a PO Box off your home line uses a PO Box as the mail address for 17 state offices. A PO Box is a normal mail address. The box just doesn't answer the question "where do you live."
One more line matters if you live overseas. The general instructions say "Please do not use this application if you live outside the United States and its territories and have no home (legal) address in this country," and point those voters to the Federal Postcard Application.
Why does a PO Box need a permanent address behind it?
The PO Box application asks for a street address first. Item 4 on PS Form 1093 reads "4. Address: Number, Street, Suite," followed by city, state and ZIP+4 lines. Item 8 then asks for two IDs:
"8. Applicant must select and enter the ID Number for two separate forms of valid identification listed below. You must present the IDs at a Post Office. One item must contain a photograph and one must be traceable to the bearer (prove your physical address). Both must be current."
The non-photo ID list under item 8 includes a "Current lease, mortgage, or deed of trust," a "Voter or vehicle registration card" and a "Home or vehicle insurance policy." Each of those documents ties you to a physical place. A PO Box is opened from a street address and does not replace one.
The street address also has to stay current after you get the box. Page 2 of PS Form 1093 says:
"The information on your PS Form 1093 must always be current. As soon as any information changes (such as your street address, telephone number, or email address), you are responsible for updating the information. Failure to update your information may result in termination of service."
DMM 508.4.2.1 sets the same duty: "If any information required on PS Form 1093 changes, the box customer must update the application." After a move, update your box application with the new street address.
A box also doesn't have to be near your home. The USPS FAQ says: "You may apply for a PO Box in a city/state other than the one in which you live, subject to availability and verification of identity and current physical address." The box can be in another state, but USPS still verifies the physical address behind it.
What address does Form I-9 ask for?
Form I-9 is the form employers use to check that a new hire can work in the United States. U.S. Citizenship and Immigration Services (USCIS) publishes the form. Section 1, the employee's part, has one address line. The field label reads "Address (Street Number and Name)," followed by "Apt. Number (if any)," "City or Town," "State" and "ZIP Code." Section 1 has no separate mailing line.
The instructions for Form I-9 say: "All employees must provide their current legal name, complete address, and date of birth." The USCIS employer handbook, called M-274, describes the address line in terms of where you live:
"If the residence is not located in a city or town, enter the village, county, township, reservation, etc. in the City or Town Field. Employees who do not have a street address should enter a description of the location of their residence, such as “Two miles south of I-81, near the water tower.”"
The handbook page has one sentence that names a P.O. box: "Preparers and/or translators may not enter a P.O. box in place of a physical address." The sentence is about a preparer or translator who helps you fill in the form. We found no sentence in the handbook page, the form or the instructions that bans a PO Box for the employee by name. The instructions for Form I-9 mention a P.O. box 0 times. Even so, the field label asks for a street number and name, and the handbook describes the line as where your residence is.
Which lines can a PO Box fill on personal paperwork?
The table keeps to the texts we read. The last column names the source for each row.
| Form line | What the line asks for | Where a PO Box stands | Source |
|---|---|---|---|
| Voter form, Box 2 | Your "home address (legal address)" | "Do not use a post office box" | Voter form instructions, Box 2 |
| Voter form, Box 3 | An address where you get mail, if different from Box 2 | No PO Box limit in the instruction text | Voter form instructions, Box 3 |
| Voter form, Box C | A map of where you live, if you have no address | The form asks for a map, not a box | Voter form face, Box C |
| Voter form, state office addresses | Where to send the form | 17 state election offices list a P.O. Box | State instructions in the voter form |
| Form I-9, Section 1 | "Address (Street Number and Name)" | No employee ban by name; the handbook describes a residence | Form I-9; M-274 3.0 |
| Form I-9, preparer or translator | The helper's address | "may not enter a P.O. box in place of a physical address" | M-274 3.0 |
| PS Form 1093, item 4 | "Address: Number, Street, Suite" | The street address you give to get the box | PS Form 1093 |
Other forms ask their own address question. Banks, the REAL ID rule for driver's licenses and IRS Form 8822 are covered with quotes in our post on using a virtual mailbox for personal mail. The Form 1040 instructions attach a condition to a PO Box number, and our post on keeping a US address while living abroad quotes that condition. USPS also has a Street Addressing option for PO Boxes. Our post on using a PO Box as a business address explains what the option changes and what it doesn't.
If you have no address at all, DMM 508.6.1 says General Delivery "is intended primarily as a temporary means of delivery" for "transients and customers not permanently located." Our post on how USPS General Delivery works covers the pickup rules. We did not read driver's license or passport rules for this post. Neither a PO Box nor a mailbox address is proof of where you live.
Is a virtual mailbox address a permanent address?
No, even though we sell them. A mailbox company receives mail for you as a commercial mail receiving agency (CMRA) under USPS rules. Before it can, you complete PS Form 1583, and the form asks for your own permanent address. DMM 508.1.8.3 says:
"The CMRA owner or manager must verify the documentation to confirm that the addressee resides or conducts business at the permanent address shown on PS Form 1583."
A mailbox address depends on a permanent address, the same way a PO Box does. The mailbox gives you a street address in a commercial building, which looks different from a box number. The address is still not where you live. On the voter form, a mailbox address belongs in Box 3, the mail line, and not in Box 2.
How Auteur handles mail when your home and mail addresses differ
We sell virtual mailboxes, so this is the seller's view. Auteur is in pre-launch, and your exact street address is assigned the day your city opens. Our product page says: "Each city gets real street addresses in commercial buildings, never a P.O. Box." Our address is a mail address, not a home address, and we don't promise it will work on any line that asks where you live.
The Virtual Business Address receives mail in a business or trade name. Choose it if mail comes to a limited liability company (LLC), a corporation or a DBA (doing business as) name. The Virtual Mailing Address is for personal mail, in individual names only.
Both plans photograph the envelope of every piece, and we open and scan only when you ask, for one flat fee per piece. Henry, our AI assistant, explains each letter you ask us to open. USPS Form 1583 is required before any provider can receive mail for you. Pricing comes by email with the next steps, and our fees and limits are in our fair use policy.
If you want a mail address in one of nine US cities for letters in your own name, get your Virtual Mailing Address. Ordering is free, there's no card, and nothing is charged today. Your home address stays the one you give on Form 1583.
FAQ
Can I put a PO Box as my home address when I sign up to vote?
The federal voter form says no for the home line. The Box 2 instruction says "Do not use a post office box or rural route without a box number." If you get mail somewhere else, Box 3 is the line for it. If you have no street address, Box C asks you to "show on the map where you live."
Can I open a PO Box if I don't have a permanent address?
USPS says a PO Box application "is not completely approved until your identity and current permanent physical address where you reside or conduct business is verified." For people without a fixed address, DMM 508.6.1 describes General Delivery as a service "for transients and customers not permanently located." Ask your local Post Office which option it can offer you.
Can I have a PO Box in a different state from where I live?
If a box is available and USPS can verify you, the FAQ allows it. The FAQ says: "You may apply for a PO Box in a city/state other than the one in which you live, subject to availability and verification of identity and current physical address."
What happens to my PO Box if my street address changes?
PS Form 1093 says the information on the form "must always be current." The form adds: "Failure to update your information may result in termination of service." Update your box application when you move.
This post explains federal forms and USPS rules as we read them. The post isn't legal advice.
Bottom line
If a line asks where you live, a PO Box usually isn't the answer. USPS verifies your "current permanent physical address where you reside or conduct business" before a box application is complete. The federal voter form keeps a post office box off Box 2, its home address line, and its Box 3 instruction sets no PO Box limit on the mail line. Form I-9 labels the employee line "Address (Street Number and Name)." A mailbox address is a mail address too. Use a box or a mailbox for the mail line, and give your real residence on the home line.
