Answer: zipcode

AnswerCrossword Clue
ZIPCODE

90210, for one

ZIPCODE

1963 system based on a 1944 Robert Moon proposal

ZIPCODE

Daily sorting criterion

ZIPCODE
Five- or nine-digit number
ZIPCODE
State follower, on an envelope
ZIPCODENumber on a letter
ZIPCODEQuint-essential number?
ZIPCODEAddress ender
ZIPCODEMail system
ZIPCODEAddress part
ZIPCODEEssential element of dot-com transactions
ZIPCODELetter number
ZIPCODEP.O. innovation for sorting mail.
ZIPCODEMail expediter.
ZIPCODEAddress must.
ZIPCODENumber to remember.
ZIPCODEPart of an address.
ZIPCODEMail must.
ZIPCODENumbers on a letter
ZIPCODENumbers on letters
ZIPCODEState follower, sometimes
ZIPCODEDelivery aid
ZIPCODE12345, e.g.
ZIPCODE90210, for Beverly Hills
ZIPCODE90210, e.g.
ZIPCODENumber of letters
ZIPCODELetter digits
ZIPCODEClosing part of an address