Answer: uspo

AnswerCrossword Clue
USPO

Letter-carriers' base: abbr.

USPO

Place to pick up pkgs.

USPO

Mailing station (abbr.)

USPO
Letter drop site (abbr.)
USPO
Letter-moving gp.
USPOMr. Summerfield's Department: Abbr.
USPOZip-py org.
USPOWhere to find the P.M.
USPOInventors' agcy.
USPOMailing loc.