BOULDER - More than 270 new business members joined the Boulder Chamber as the result of a two-day membership drive led by volunteers in the business community.

New members brought about $110,000 in new revenue to the chamber, said Angelique Espinoza, a chamber spokeswoman. About 230 volunteers were involved in the event, from one-person real estate and architecture offices to employees of new member companies MillerCoors LLC and PepsiCo. Inc. (NYSE: PEP), Espinoza said.

Before the membership drive, the Boulder Chamber had about 1,530 members - about twice as many as any other community of Boulder's size in the country, Clif Harald, the chamber's interim chief executive officer, said in a press statement.

"This event has been so successful because it was founded on the relationships that exist within Boulder's dynamic business community," Harald said, who also is executive director of the Boulder Economic Council.

Leaders from the Boulder business community chaired teams that competed against each other to recruit new members. Some potential members received multiple calls from volunteers, Scott Ziemba, the chamber's director of business development, said in the press statement.

As a thank you, the chamber handed out awards Thursday at a party at A Spice of Life Event Center, 5706 Arapahoe Ave. in Boulder.