Personally I would not have given a postcode.
Anything I buy these days goes to work just as another degree of separation from my home address.
he knows your street now and I’m sure a bit of Web stalking on his part might provide enough info for him to get at your routine, and maybe find a photo with your face, he could well figure out your location with what he already has. Be cautious, perhaps just come out and email him your concerns.
Best suggestions for the future is to arrange any meetings at a local, mutually agreed site, supermarket carparks (busy ones, with CCTV ideally) are a good idea…
Its not rude, Or paranoid, you don’t know this individual, But he knows you have at least on portable item of significant value and he’s narrowed you down to a street, what do you know about him?