I tried to find an address in my town on Mapquest the other day (I’d received their “County Edge,” a weekly newspaper, as well as mine) but nothing came up. Eventually it occurred to me to put it back in the mailbox for the next day’s pickup ;-).
LOL! Don’t feel bad. I’m always getting someone else’s mail. If I have a pen on me, I draw an arrow pointing to the address, and print in large block letters: NOT HERE!!!
Otherwise, I just stick it in the outgoing mail slot, because usually, it’s a substitute carrier who makes the mistake.