Address Line 1 vs. Address Line 2: What’s the Difference?

Looking at a standard form, you’ve probably noticed two lines labeled “Address.” But what’s the difference between Address Line 1 and Address Line 2? And why do we need two lines in the first place?

post office

The answer is that our addresses can be pretty long and complicated. Take, for example, a standard street address. It might look like this: “2566 Dow Street, PO Box 168.” As you can see, this address is quite long, and it would be challenging to fit it into one line. That’s where Address Line 2 comes in. Address Line 2 is reserved for the apartment, suite, PO box, or space number, which allows the rest of the address to be on its own line.

address lines 1 vs 2
Address lines 1 vs. 2

Of course, not all addresses are as long as the one above. In many cases, Address Line 2 may be left blank. But whether your address is long or short, it’s always a good idea to use both Address Lines to ensure your mail gets to its destination safely – after all, even one misplaced letter can cause your mail to get lost in the system. So next time you fill out a form, remember to include your complete address – on both lines!

What should the Address line 1 section contain?

Address line 1 is the street address:

For example, the address line 1 for 2566 Dow ST, Box 168 would be “2566 Dow ST.”

What should the Address line 2 section contain?

Address Line 2 is used to designate the apartment, suite, unit number or space number (or any other designation not part of the physical address). The company name can be added if applicable The standardized address format is as follows:

For example, the address line 2 for 2566 Dow ST, Box 168, would be “Box 168.”


Thank you for reading our blog post, and we hope we could answer your question about the difference between address Lines 1 and 2. Address: Line 1 is for the street address; Line 2 is for the apartment, suite, or space number. If you still have questions or need help, please don’t hesitate to contact us. We’re always happy to help in any way we can!


  • Why are there two address lines?
  • Can you remove the second address field and put all the information in address line 1?
  • Should your mailing address be the same as your home address?
  • What does address line 1 and 2 mean?
  • How to write the address with the apartment number?

Published on: 2022-10-13
Updated on: 2023-03-01

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Isaac Adams-Hands

Isaac Adams-Hands is the SEO Director at SEO North, a company that provides Search Engine Optimization services. As an SEO Professional, Isaac has considerable expertise in On-page SEO, Off-page SEO, and Technical SEO, which gives him a leg up against the competition.