Comment by DetectDefect

My guess is that it might a couple things:

1. There's a map feature where users can assign their location to a photo that was taken. I suppose this could qualify as 'physical address'.

2. Businesses often have their physical addresses as part of their profile.

You can order things from Shops within the application. I am not an Instagram user so whether this is the only feature that records your address or not, I can't say.

I use Facebook with the email address that I use for many things, like online shops. Some years ago FB allowed "check what data we have on you" and I learnt that these online shops upload their customer data to FB, so they can target us in the ads they put on FB. Among others, it matches using email... so I'm guessing Zuck has my home address too.

But anyway, I have Instagram and WhatsApp on my phone. They probably can also see my location (or the SSID of networks around me) and figure out where I live.

Most people are incredible naive and willingly provide that information to Facebook/Meta. They even provide real names and videos and pictures of themselves and their relatives to these websites!