How do I change my home address on my iPad for auto fill?

First, ensure that you have created a Contact Card for yourself in the Contacts App. Ensure that your address is correctly set-up.

Next, from iPad settings:

Settings > Safari > AutoFill >

• Use Contact Info - set to ON
• My Info - from the list of contacts, select your Contact Card

Where do you actually see your address?

I can't see it anywhere on mine (although I would never put it because it's private info that could be hacked or extracted otherwise).

You are very welcome.