another dumb question

Dr
I'm sending a letter to someone and I just moved to an apartment. I have no idea how to address the return address as this is my first time living in an apartment. Let's say my info was this (not my real personal information) 
Name: Rebekah jones, address: 123 Apple street apartment 56. Zip code: 94529 city: happytown 
How would that be formatted? Thanks in advance! 

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