Address Line 2 (What Does It Mean And How To Fill It Out)

What is Address Line 2?

Do you put apartment number on address line 2?

What are the essential elements you should know!

Keep reading as we have gathered exactly the information that you need!

Let’s see what to put in address line 2!

Are you ready?

Let’s get started!

What Is Address Line 2

It’s possible that some addresses require more than one to be complete.

That’s when you need to have an “Address Line 1” and “Address Line 2”.

Address Line 1 is generally for the civic number and street name (street address).

Address Line 2 is for the apartment, suite, unit number, or other address designation that is not part of the physical address.

Address Line 3 is typically for the city, state, and zip code.

In international addresses, you’ll generally put the country name below Line 3.

Address Line 2 Example

Let’s look at an example of Address Line 2.

A standardized address format is as follows:


As you can see, there are four lines.

Here is an address with only a street number:

Mr. John Smith
555 Beverly Hills
Los Angeles CA 55555

Here is an address with a unit number or apartment number:

Ms. Jane Doe
777 Casino Drive
Apartment 123
Houston TX 77777

USPS Addressing Standards

According to the USPS, the standard way for writing an address is on three lines:


On the first line, you’ll put the recipient’s name.

On the second line you’ll put the street address.

On the third line you’ll put the city, state, and zip code.

For example:

Ms. Suzanne Smith
123 Main Street, Unit 12
Chicago, IL 12345

According to USPS standards, placing the apt or suite number on its own line (also referred to as “address line 2” or “street line 2”) will result in a non-standardized address.

For example:

Ms. Suzanne Smith
123 Main Street
Unit 12
Chicago, IL 12345

In every region, your post office will have its recommendations as to how to complete an address.

Address Form Field

In many online forms, particularly ecommerce shopping carts, you may come across an Address Line 1 and Address Line 2 dilemma!

What is Address Line 2?

You  see it when asked for your billing address, street address, residential address, apartment address, or other mailing address.

Do you wonder what goes in Address Line 2?

Address Line 2 in form fields is generally intended to have you provide:

  • An apartment number
  • Suite number
  • Unit number
  • Space number
  • Floor number
  • Room number
  • PO Box number
  • Other secondary address information 

Answer To Common Questions

Let’s look at some common questions related to how to fill out address line 2.

Does PO Box go in address line 2?

Yes, you can put a PO Box in address line 2 as it’s an address element (over and above just the mere reference to the street number and name) that is important to identify your specific box.

Does Apt number go in the second line?

Typically, you will write your apt number on address line 1 before the street number followed by a hyphen.

For example:

123 – 555 Street Name
Best City, State, ZIP

In this example, we are referring to apartment number 123 located at 555 Street Name.

When a second line is presented to you, you may split the address and put the apartment number on the second line as follows:

555 Street Name
Apt 123
Best City, NY, 12345

Address Line 2: Takeaways 

So what is Address Line 2?

Does apartment number go on address line 2?

Let’s look at a summary of our findings.

Address Line 2 Meaning

  • The USPS addressing standard consists of three lines where you have the recipient’s name, delivery address line and the city, state and zip code line
  • The address line 1 should contain your primary address information (street address information)
  • The address line 2 should contain information related to the apartment, suite, room, floor, Box number, care of, attention, or other similar information 
  • Many online forms ask for your address by including an Address Line 1 field and an Address Line 2 field 
Address Line 1
Checkout page
Checkout usability 
Mobile form usability 
Postal service abbreviations 
Shopping cart
Address meaning 
Commercial address
Delivery instructions 
Head office 
Indirect signature required 
Its signature 
PO box address 
Procurement contract 
Residential address
Shipping address 
Street address


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