Use Case	Example	Why It’s Good
Same line	123 Oak St Apt 4B	Clear and compact
With comma	123 Oak St, Apartment 4B	Easy to read in forms
Using “#”	123 Oak St #4B	Saves space
Two-line format	123 Oak St Apt 4B	Clean layout
Missing unit	123 Oak St	Can lead to lost mail
Canadian style	Unit 5 – 123 Oak St	Right for Canada

Getting to Know the Standard Format

• Typical format: Your standard apartment address should include your name, followed by the street address and apartment number, then your city, state, and ZIP code. Keep each part on its own line and avoid extra symbols.
  • Example:
    Jamie Lopez
    101 Main Street Apt 7A
    Chicago, IL 60614

This simple layout works across USPS, FedEx, UPS, and most official platforms.

Where Does the Apartment Number Go?

• Apartment placement: You can include the apartment number on the same line as the street address or on the next line if needed. Just make sure it clearly follows the street name.

Accepted formats include:

• 789 Sunset Blvd Apt 10C
• 789 Sunset Blvd, Apartment 10C
• 789 Sunset Blvd #10C

Avoid placing the unit before the street or in a random spot—it just leads to confusion.

What to Do and What to Avoid

What to do:

• Use abbreviations like Apt, Unit, or #
• Keep street suffixes standard: St, Ave, Blvd
• Include your ZIP+4 if possible
• Check your address using the USPS address lookup tool

What to avoid:

• Leaving out the apartment number
• Using non-standard terms like “Flat” or “Suite” unless officially listed
• Adding special characters or emojis

Writing an Apartment Address for Regular Mail

• Mailing it right: When you’re using USPS, formatting matters. Automated systems handle sorting, and even small mistakes can delay your delivery.
  • Example:
    Taylor Reed
    456 Evergreen Lane Apt 4B
    San Diego, CA 92103
• Envelope tips: Use dark ink, clear writing (or typing), and keep the return address in the top-left corner. Center the recipient’s address on the front of the envelope. For international mail, always include “USA” on the last line.

Filling Out Apartment Addresses in Online Forms

• Two-line forms: If the form gives you separate lines, use Line 1 for the street and Line 2 for the apartment.
  • Line 1: 555 Pinecrest Drive
  • Line 2: Apt 3D
• Single-line forms: Combine everything in one line. Use any of the following:
  • 555 Pinecrest Drive Apt 3D
  • 555 Pinecrest Drive, Apt 3D
  • 555 Pinecrest Drive #3D

Always double-check the confirmation screen or email receipt to make sure your full address displays correctly.

How Apartment Addresses Vary Around the World

International differences: Not every country follows the U.S. format. In some places, the apartment number comes first, and different labels are used.

Examples:

• Canada:
  Unit 14 – 123 King St W
  Toronto ON M5H 2N2
  CANADA
• UK:
  Flat 9
  22 Regent Street
  London W1B 5RA
  UNITED KINGDOM
• Australia:
  12/456 Queen Street
  Brisbane QLD 4000
  AUSTRALIA

Always check the local postal rules when sending mail internationally.

Real-Life Examples You Can Follow

• USPS style:
  Avery Johnson
  3029 Birchwood Rd Apt 6F
  Philadelphia, PA 19146-2224
• Business shipping format:
  Riley Evans
  3905 Park Lane, Unit 12C
  Austin, TX 78703
• Informal address:
  Jordan Kim
  #17A, 1407 Willow Ave
  Memphis, TN 38104
• International address:
  Priya Nair
  Flat 15, Skyline Residency
  77 Linking Road
  Mumbai 400052
  INDIA

These styles are delivery-friendly and work for mail, packages, and online forms.

Fixing Common Apartment Address Mistakes

• Common issues: Mistakes happen often, but most are easy to fix if you know what to watch out for.
  • Missing apartment numbers can send your mail to the wrong unit or get it returned.
  • Using the wrong abbreviations like “Room” instead of “Apt” can confuse sorting systems
  • Putting details in the wrong order—always start with the street, then add the apartment.
  • Forms that limit character space—use “#” instead of “Apartment” if needed.

Review everything carefully before sending or submitting.

Tips to Keep Everything Running Smoothly

• Stay consistent: Match the address on your lease, ID, or utility bills. That’s the version you should copy and paste everywhere.
• Save it: Store your full address in your phone’s notes app or password manager. You’ll avoid typos every time you place an order or fill out a form.
• Update it: When you move, update your address with USPS and any important services. That way, nothing gets lost in transition.

Conclusion

Writing an apartment address sounds easy, but it’s one of those little things that can cause big problems if you get it wrong. Just follow the format, make sure your unit number is included, and double-check everything before submitting.

It only takes a few extra seconds to get it right—and that can save you from a whole lot of delivery headaches down the line.

FAQs

What should I do if a form doesn’t let me use symbols like “#”?

Use words instead. Write out “Apt” or “Unit” followed by your number. This keeps things clear and works with most systems.

Can I just use a PO Box instead of my apartment address?

For regular mail, yes. But delivery companies like UPS and FedEx won’t drop off to PO Boxes, so you’ll still need to include your full apartment address for packages.

How do I handle multiple people sharing an apartment?

List each person’s name on separate lines, followed by the same shared address. For example:
Chris Moore
Jamie Lee
111 Ash Street Apt 2B

Is it okay to use abbreviations like “Apt” in legal documents?

Yes, “Apt” is perfectly acceptable and widely used in legal and official contexts.

What if my apartment doesn’t use numbers, just names?

Use whatever’s officially listed on your lease or building. If it says “Suite Magnolia” or “Flat Coral,” that’s what you include in the address.