Answer: zipcodes

AnswerCrossword Clue
ZIPCODES

Schenectady's 12345 et al.

ZIPCODES

60606 and 70707, e.g.

ZIPCODES

They're at states' rights

ZIPCODES
Mail numbers
ZIPCODES
They gained four digits in 1983
ZIPCODESRouting aids
ZIPCODESThey're written on states' rights
ZIPCODESCertain numbers.
ZIPCODESNumbers in the mailbag.
ZIPCODESDelivery aids
ZIPCODESNumbers of places
ZIPCODESNumbers needed for letters
ZIPCODESLetter numbers
ZIPCODESNumbers after HI and OH, e.g.
ZIPCODESBulk mail requirement
ZIPCODES20001 and 20011