I have frequently seen addresses, most often in the mid-west of the USA, which have only a name, no word for street etc., like 1245 Elm, or 6622 Grant, etc. This is not, apparently, just an omission or typo -- you see it on letterheads, invoices etc.
At the opposite extemity for elaborateness, is the city of Washington DC. You can easily find a site on the Net which will tell you all about the layout of DC streets and how they are named. Briefly, you have lettered streets, like 'A' Street, 'F' Street, etc. and 'I' Street often written Eye street to avoid confusion, and then there are numbered streets, 15th St., etc., so you can have an intersection of 15th and K Sts. The letter streets go E-W and the no. streets N-S (or is it the other way?) Then there are the avenues, all named after states, which go diagonally. Lastly, the city is divided into 4 quarters, so you can have an intersection of 6th St. & Pennsylvania Ave. NW and a 6th St. and Pa. Ave SE.
Washingtonians think this is a perfectly logical and sensible way of doing things. Anyone who has ever driven in that Godforsaken city knows better. When you get lost, as everyone does, even the natives, the worst think you can do is to try going around the block to get back on track. The diagonal avenues will lead you far, far astray every time.
