I have the same question.
I want my return address to remain my home address. However, it's easiest for me to drop off packages at the post office closest to my job. The postal worker told me they don't like the "mailed from" zip to be from a different area of the city because it throws off their numbers.
Changing my return address to my work address is not an option
Is there a way to change only the "mailed from " zip code on the shipping label?
I had a chat with the Shopify Customer Service about it as I got the same request from the post office. Per Shopify Customer Service ,"That's not possible in our system. To print labels in Shopify, it pulls your Ships From address in your Shipping settings. There's no option to change that"
Therefore, option is to print directly from USPS' s site: Create Shipping , sign in or create account, and select,
I'm shipping from another ZIP Code™.
Print this as the return address, but I'm shipping from somewhere else.