I needed new numbers for our house, so I printed my own! 
I have made all digits, from 0 to 9, so choose what you need! And, yes, I also made a 9, which basically is just an up-side-down 6…

I printed mine in ASA, they have been hanging there for several years, and they still look brand new. 
 

The numbers are about 200mm tall. 

Use ASA (or other filament with good UV resistance)
3-4 walls

If you want to edit the files, here is the LINK to the Onshape document.