Mechanicsburg Chamber of Commerce - Bringing together business and community. The Mechanicsburg Chamber of Commerce supports a variety of community, business and economic development programs throughout the year. It has over 400 business and residential members throughout South Central Pennsylvania; and focuses on the Mechanicsburg Borough, Hampden, Lower Allen, Monroe, Silver Spring and Upper Allen Townships. The purpose of the Mechanicsburg Chamber of Commerce is to promote the commercial and community interests of Mechanicsburg, PA and its environs. Check out our website at www.mechanicsburgchamber.org