PORTLAND — The new Walgreens store on Marginal Way in Portland opens for business Friday at 8 a.m.

The roughly 12,500-square-foot store, which is next to Trader Joe’s market, is hosting a private open house tonight from 6 p.m. to 8 p.m.

Greg Paramantgis, Walgreens’ district manager, said guests at tonight’s event will include business partners, town officials and the mayor, who will lead a ribbon-cutting ceremony.

In the last few years, Walgreens has opened three stores in Portland and hired more than 90 new workers, said Paramantgis.

The Deerfield, Ill., company, which reported $67 billion in 2010 revenue, operated 7,689 drugstores as of the end of February.

Thirteen of those locations are in Maine.