When I was growing up in the 1960s, we just had a street name (which probably wasn't even required) and RFD #1 and the name of the adjacent town that handled rural delivery for the area. And this wasn't the back of beyond; it was just a couple miles outside one of the main Philadelphia suburban spokes. At some point they gave us a Box number to use although we didn't actually have a postal box and they continued to deliver in the usual manner at least until we moved around 1980.
In the US though, there was a real push to rationalize street addresses for emergency services in the late 90s or so. It may not be universal but I know of even summer camps at the end of dirt roads in Maine that have street addresses now.
In the US though, there was a real push to rationalize street addresses for emergency services in the late 90s or so. It may not be universal but I know of even summer camps at the end of dirt roads in Maine that have street addresses now.