
- Formatting apartment addresses correctly helps the U.S. Postal Service deliver mail efficiently.
- Modifying the standard format lets you write a specific apartment address under different circumstances.
- You can use the same formatting rules to write your return address.
Many people are unaware there’s a proper way to write an apartment address. However, understanding the correct format and following it every time you write an apartment address can clarify your correspondence. Follow the steps for how to write an apartment address and ensure your mail will get where you want it to go.
Why is it important to format your apartment address correctly?
Before delving into the specifics of apartment address formatting, let’s understand why it’s essential to get it right:
1. Timely delivery
Correctly formatted addresses help postal services, courier companies, and delivery drivers find your apartment quickly and efficiently. This ensures that your mail and packages are delivered in a timely manner.
2. Avoiding confusion
Accurate apartment addresses reduce the likelihood of confusion or misdelivery, preventing your important documents or parcels from ending up at the wrong location.
3. Emergency services
In case of emergencies, such as medical assistance or fire incidents, having a well-structured apartment address can be a matter of life and death. First responders need precise location information to reach you quickly.
4. Visitor guidance
When friends, family, or guests come to visit, they’ll find it much easier to locate your apartment if you provide a clear and properly formatted address.
Now, let’s dive into the details of how to write an apartment address correctly.
How to write an apartment address with standard formatting
Follow these steps to write an apartment address using a standard format:
- Write the recipient’s full legal name
According to the U.S. Postal Service (USPS), you should use a recipient’s full and legal name instead of a nickname. If the recipient has just moved into a new apartment building, the individual may not receive the mail if his or her nickname isn’t yet well known.
Mail addressed using individuals’ full legal names can get forwarded to them if they’ve changed their address. If they need to pick up the mail from the post office, they can only collect it once they show ID under the same name. - Write the first line of the apartment address
Apartment addresses usually appear on two lines. The first line includes the following information:
The apartment building’s street number
The street name
The name of the apartment building
The apartment number
Include a comma after the name of the street and the building letter or number. Here’s an example of a recipient’s name and the first line of the apartment address:
John Roe
111 Main Street, BLDG A, APT 1 - Write the second line of the address
The second line of an apartment address can vary depending on circumstances. Usually, it’s the final line of the address, which consists of the following information:
City
State
ZIP code
Below is an example of a complete apartment address:
John Roe
111 Main Street, BLDG A, APT 1
New York, NY 11111
If you’re sending the mail internationally, add another line to include the country’s name. Write the full country name in capital letters to make it clear you’re sending mail internationally. The following is the apartment address format for international mail:
John Roe
111 Main Street, BLDG A, APT 1
New York, NY 11111
USA
Adding abbreviations to your apartment address
When formatting your apartment address, understanding common abbreviations can help you streamline the process and ensure clarity. Abbreviations are often used to simplify addresses, making them more concise and readable. In this comprehensive guide, we’ll not only explore the proper apartment address format but also provide you with essential abbreviations to use when writing your address.
Common Abbreviations for Apartment Addresses
1. Apartment or Apt.
- Full Form: Apartment
- Abbreviation: Apt.
- Usage Example: Apt. 3B
2. Street or St.
- Full Form: Street
- Abbreviation: St.
- Usage Example: 123 Elm St.
3. Avenue or Ave.
- Full Form: Avenue
- Abbreviation: Ave.
- Usage Example: 456 Maple Ave.
4. Boulevard or Blvd.
- Full Form: Boulevard
- Abbreviation: Blvd.
- Usage Example: 789 Oak Blvd.
5. Drive or Dr.
- Full Form: Drive
- Abbreviation: Dr.
- Usage Example: 101 Pine Dr.
6. Road or Rd.
- Full Form: Road
- Abbreviation: Rd.
- Usage Example: 321 Cedar Rd.
7. Suite or Ste.
- Full Form: Suite (used when specifying a suite number)
- Abbreviation: Ste.
- Usage Example: Ste. 205
8. Floor or Fl.
- Full Form: Floor (used when specifying a floor number)
- Abbreviation: Fl.
- Usage Example: Fl. 10
9. Building or Bldg.
- Full Form: Building (used when specifying a building name or number)
- Abbreviation: Bldg.
- Usage Example: Bldg. A
10. Company or Co.
- Full Form: Company (used when addressing business entities)
- Abbreviation: Co.
- Usage Example: XYZ Co.
11. Post Office Box or P.O. Box
- Full Form: Post Office Box (used when specifying a P.O. Box number)
- Abbreviation: P.O. Box
- Usage Example: P.O. Box 123
Address format for specific designators
If you need to include “care of” or another specific designator in the apartment address, you can do so after the recipient’s name. The format will be as follows:
John Roe
c/o Jane Roe
111 Main Street, BLDG A, APT 1
New York, NY 11111
5 tips for formatting apartment addresses
Keep these terms in mind as you practice how to write an apartment address:
1. Use secondary address designators
Abbreviations in apartment addresses are secondary address designators. They may seem unnecessary, but using them can minimize delivery delays. The following are some of the standard secondary address designators for the U.S. Postal Service:
- Building: BLDG
- Floor: FL
- Department: DEPT
- Apartment: APT
- Room: RM
- Suite: STE
There’s no abbreviation for “Unit,” but the word still serves as an address designator.
2. Avoid street and city abbreviations
While abbreviations for apartment terms can help your mail move smoothly to your recipients, abbreviating street and city names can have the opposite effect. Street and city abbreviations may be familiar to residents, but they can be confusing in other locations. Always write street and city names completely to increase the chance your mail will reach its destination without delays.
3. Try using a number sign
Some people who send mail or packages to apartment dwellers prefer using the number sign (#) when writing the apartment number. This usage is acceptable, but you must add a space between the sign and the number. Here’s an example:
John Roe
111 Main Street, BLDG A, APT # 1
New York, NY 11111
4. Include your return address
You can use the same apartment address format when writing your return address. If your recipient has moved on or the mail gets delivered to the wrong place, correctly formatting your return address helps mail carriers return the mail to you. Otherwise, you may wonder why the recipient is taking such a long time to respond.
5. Write the apartment address clearly
Write the apartment address in neat handwriting. Using a permanent pen or marker rather than a pencil can prevent smudges. Choose a pen with ink that creates a clear contrast against the envelope or package. A black pen is best if you send the mail in a white envelope. You should be able to read the mailing address from an arm’s length away.

FAQs: Writing an apartment address
The U.S. Postal Service has several options for changing your apartment address to help you choose the most convenient option. You can fill out a physical form at your local post office, change your address online via the USPS website, or speak to a customer service agent at 800-ASK-USPS. Give your new address and state whether you’ve made a temporary or permanent move.
Always use your legal name when writing your return address. A legal name minimizes confusion. If your mail gets held, you’ll need to show a valid ID that matches the name on the mail to collect it.
You should file a claim or complaint with the U.S. Postal Service if you are not receiving mail at your apartment. Representatives can investigate the matter and report their findings to you. For example, post office officials may temporarily withhold delivery if they feel your mailbox isn’t secure. In this case, your property manager may need to improve your mailbox before deliveries can recommence.
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