Costco's sales rise in December

ISSAQUAH, Wash. — Net sales for December at Costco rose 11% to nearly $9.2 billion for the five weeks ended Jan. 2, compared with the year-ago period.

Same-store sales rose 4%, while international same-store sales rose 12%.

Costco currently operates 582 warehouses, including 425 in the United States and Puerto Rico.