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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for P.O. address 3 letters:

AVE: Part of many a P.O. address
RFD: P.O. address
SANTACLAUS: P.O. address in Indiana
ANAHEIMCA: P.O. address of 75-Down