Yep, and as far as I could tell growing up with an R.D. address, it didn’t really correlate to anything directly. It probably made sense for the post office and letter carrier route, but there was no way to find my house based on the address.

Also, if I remember correctly, I at least had some numbers with the address — some time before that addresses could simply be R.D. cityname and the post office just had to know by the name on the envelope where to deliver it. That was before my time, though.