Residence Address vs Mailing Address: How to Use Each One

A form that asks for a residence address and a mailing address is asking two different questions. The residence address is the place you live. The mailing address is the place where you want letters and bills to arrive. Those places can be the same door, or they can be a house and a post office box across town.

Use the residence line when someone needs to know where you live, and the mailing line when someone needs to know where to send the envelope. This page covers when the two addresses split, which printed line the Postal Service delivers to, and what to type on a bank form, a tax return, a license application, and a voter form.

What Is a Residence Address?

A residence address is the physical place where you live, such as a house, an apartment, or a condo with a street number that matches a real spot. License offices, election offices, and banks use that place to tie you to a precinct, a state, or a person who can be found.

The line is a street number and a street name, plus an apartment or unit number when the building has more than one home, then the city, state, and ZIP Code. A post office box does not describe where you sleep, so it does not stand in for this address on its own.

What Is a Mailing Address?

A mailing address is the delivery point you choose for letters, bills, and other postal mail. It can be the same street as your home. It can also be a PO Box, a private mailbox at a store that accepts mail for customers, a relative’s house, or a military mail box.

The Postal Service takes the piece to that delivery point. UPS, FedEx, and Amazon do not place packages inside a PO Box, because only the Postal Service delivers into those boxes. When a private carrier needs a door, the shipping address has to be a street location that carrier can reach.

When Are a Residence Address and a Mailing Address Different?

When a carrier already delivers to your door, you can put the same street address on both lines. The two addresses part ways when the carrier never comes to the house, when you want sensitive mail somewhere else, or when a business keeps its letters apart from the place it operates.

A Home the Carrier Does Not Serve

Some houses sit inside a post office’s area and still never see a letter carrier. The residence address remains the house. The mailing address is the PO Box where the letters actually land. A PO Box application is not fully approved until that office checks your identity and the permanent physical address where you live or do business.

A no-fee box is tied to a home or business the Postal Service has chosen not to serve on a route. Every one of these tests has to be met:

• The location is inside the geographic delivery area of that Post Office.
• The location counts as a potential carrier delivery point.
• The Postal Service chooses not to provide carrier delivery there.
• You do not already get carrier delivery through an out-of-bounds receptacle.

If the carrier does not serve the door, a registration card or a bill addressed only to the house has nowhere to land. The mailing line on the form is the box, and it needs to be filled even when a dealer or a website leaves it blank.

A Store Mailbox or a Relative’s House

A store that rents mailboxes, called a commercial mail receiving agency, gives you the store’s street address plus your private mailbox number. On the envelope that number is marked PMB or with a # sign. The words PO Box belong to the Postal Service, and putting them in front of a private box number is the wrong label, including at a college mailroom.

ON A STORE MAILBOX

• The marker: Print PMB or # with your box number on the store’s street line.
• The ban: Do not write PO Box in front of a private mailbox number.

Mail you collect at a family member’s house uses that street as the mailing address. Your residence address stays the place you actually live, which is the address a license office or an election office will ask to see.

A Business or a Military Mail Box

A business can receive everyday letters at a box and still keep a street address for the place it operates. The December 2025 Form SS-4 splits those jobs across two lines, and the instructions for Form SS-4 lines 5a and 5b say to give the physical address only when it differs from the mailing address.

• Line 4a: The mailing address, and the form itself allows a P.O. box.
• Line 5a: The street address if it is different, and the form says not to enter a P.O. box.
• Line 6: The county and state of the principal physical location.

For a personal bank account, the bank customer identification program rule requires a residential or business street address before the account opens. If you have no street address at all, that rule allows an Army Post Office or Fleet Post Office box, or the street address of next of kin or another contact person. A company gives a principal place of business, a local office, or another physical location.

The Delivery Line the Postal Service Uses

When a piece shows both a street and a post office box, the bottom delivery line decides where it goes. Under the dual address rule in the Domestic Mail Manual, the piece is delivered to the address on the line immediately above the city and state. If the street and the box share one line, delivery goes to the Post Office box. The ZIP Code has to match that delivery line, and the same limit applies to a return address.

Publication 28, in the October 2024 edition, tells mailers to drop the extra address from the finished piece when they can, and to keep both only in their files. When both stay on the piece, the intended delivery address goes on the line just above the city, state, and ZIP+4 code. Those standards say that line is normally the Post Office box, with the other address on its own line above it.

A piece aimed at the box follows the shape in those standards, with the box on the delivery line and the ZIP+4 code that belongs to the box:

PO BOX 1001
FALLS CHURCH VA 22041-1001

If you still print the street, it sits above the box. Put the street directly above the city and use the street’s ZIP Code, and the carrier takes the piece to the house instead. A return address tells the Postal Service where to send a piece that cannot be delivered, and some letters follow separate rules for mailing without a return address.

Which Address Belongs on Each Form?

Read the label on the blank before you type. A line marked residence, physical, street, or principal residence wants where you live or operate. A line marked mailing wants where the envelope should go, inside the limits that form sets.

The Form 1040 instructions on box numbers say: “Enter your box number only if your post office doesn’t deliver mail to your home.” That is a mailing convenience for a home the carrier does not serve. It does not decide which state treats you as a resident.

The REAL ID rule on proof of residence says you present at least two documents of the state’s choice that show your name and principal residence, and a street address is required. Principal residence means where you currently live, even at a temporary address, in line with that state’s residency rules if it has them. An alternate address may appear on the card for a state confidentiality program covering domestic violence, dating violence, sexual assault, stalking, or a severe form of trafficking, for an address a court or a law has suppressed, and in places where no number and street name have been assigned, where a Postal Service address style is acceptable.

The national mail voter registration form asks where you live and, on a separate line, a mailing address if it differs. The home line takes a street number and street name, or a rural route with a box number, and it tells you not to use a post office box or a rural route that has no box number. If you live in a rural district or at a residence without a standard street address, the form tells you to draw a location map. A post office box belongs on the mailing line.

How to Write a Residence Address and a Mailing Address

Print or type the lines in a plain block, with the city, state, and ZIP Code on the last line. Use the city name the Postal Service accepts for that ZIP Code, and the two-letter state abbreviation. A complete address is one that can be matched to the ZIP+4 product so the piece can receive the full code.

That code is a nine-digit number: five digits, a hyphen, and four more digits. The last four narrow the spot to something like one side of a block, a building, a firm, or a group of post office boxes.

• Street home: Street number, street name, and the unit designator the building uses, such as APT or STE, then city, state, and ZIP Code.
• PO Box: PO BOX and the number only. Words such as Caller, Drawer, or Bin are changed to PO BOX on the finished piece.
• Rural or contract route: A route and a box, in the shape RR 5 BOX 10 or HC 4 BOX 45. A leading zero on the route number is not required.
• Puerto Rico box: Spanish labels such as Apartado are standardized to PO BOX, and an urbanization name is added when that area uses one.

At some post offices you may use the office’s street address, then a # sign and the box number, instead of the words PO Box. The customer agreement for that option requires the # sign. Suite or Apt in its place can send the piece back to the sender. The format lets some private carriers leave a package at the post office. It is not a physical residence or a place of business on legal documents, and the agreement bars wine, other alcohol, and items over 70 pounds. Both the box style and the street style deliver into the same box, so do not file a change of address from one version to the other.

On an ordinary apartment, use APT, STE, UNIT, or the designator the file already shows. If you use a # sign for that unit, leave a space between the sign and the number. Do not swap in # when the correct designator, such as APT, is already known.

Common Mistakes With a Residence or Mailing Address

Most returns and rejected forms come from putting a correct address on the wrong line, or from a ZIP Code that belongs to the other door.

• Box on the home line: A PO Box in a residence, street, or principal-residence field fails a bank check and a license check. Read the label and keep the box on the mailing line.
• Blank mailing line: If the carrier does not serve the house, tags and bills addressed only to that door do not arrive. Fill the mailing line with the box.
• Mismatched ZIP Code: The ZIP Code has to belong to the line directly above the city. A street ZIP under a box sends the piece the wrong way.
• Suite on a post office street line: Street addressing uses # or UNIT, not Suite or Apt.
• PO Box on a store mailbox: A private mailbox takes PMB or # on the store’s street.
• A unit that looks like PO: A unit such as P0, with a zero, has been read by bank software as the letters PO, and the application stops as if you had typed a post office box. Spell APT and keep any real box in the mailing field.

A move notice at the post office does not finish the job with the IRS. A National Change of Address record may update the address on file, and the IRS also says not every post office forwards government checks, so you should still notify the IRS. Form 8822 covers a home mailing address. On a joint return, if you still live together, both of you sign. If you now have separate addresses, each of you notifies the IRS.

Frequently Asked Questions

Does a Mailing Address Change Your Credit Score?

No. Experian says the addresses on a credit report, including a post office box or a work address, do not change your credit score. They sit on the file so lenders can match you to your accounts. An address you do not recognize can still be worth a dispute, because it can point to fraud, while an old home you really lived at can stay on the file without moving the score.

Will the Post Office Update the IRS When You Move?

Not in a way you should trust for a refund or a notice. The IRS says a change you file with the Postal Service may update the address it holds, through the National Change of Address database. The same answer says not every post office forwards government checks, so tell the IRS yourself with Form 8822, with the new address on your next return, or with a signed statement that includes your name, old and new addresses, and your taxpayer number.

Can You Register to Vote With a Rural Route and No Box Number?

Not as the address where you live. The national mail voter registration form asks for a street number and street name, or a rural route with a box number, and it tells you not to use a post office box or a rural route with no box number on that line. A route without a box number can go on the separate mailing line, along with a post office box, when your mail goes somewhere other than the place you live.

What If a Form Reads Your Apartment Number as a PO Box?

Rewrite the physical line so the unit does not look like the letters P and O. A unit printed as P0, with a zero, has been treated by a bank website as a post office box, which blocks an account that was never meant for a box. Use the designator the building uses, such as APT, and put a real post office box only in the mailing field.

Before you send the form, match each blank to the place it names and match the ZIP Code to the line that should receive the mail. The house stays on the residence line, the place that gets the letters stays on the mailing line, and a piece that prints both uses the line just above the city.

Disclaimer: This page is an educational guide to how a residence address and a mailing address are used on mail and on common forms. It is not legal, tax, banking, or licensing advice, and it does not replace the instructions printed on the form you are filing. Check that form and, when a rule turns on where you live, ask the state licensing office, a tax professional, or the bank before you rely on a line you are unsure about. Form lines, ZIP Code files, and delivery rules change, and the details here reflect the sources reviewed for this page.