Relationships that will build your business, establish your leadership credentials, access critical business intelligence, and reach County’s lucrative business market. Like the community we serve, the Loudoun County Chamber of Commerce is a leader in Northern Virginia, one of America’s fastest-growing, most prosperous communities. Founded in 1968, the Loudoun Chamber has become the largest Chamber of Commerce in Northern Virginia. Our more than 1,000 members form the premier network of businesses and community leaders in the nation’s most economically vibrant and fastest-growing counties. Northern Virginia’s finest businesses are Loudoun County Chamber members because they need the finest networking, marketing, information, and leadership opportunities in this very competitive market