The Mongomery County Agricultural Center Inc. (MCAC) was formed as a privately operated 501(c) (3) non-profit organization on January 7, 1949, when a group of local farmers were elected as the first Board of Directors by the volunteer membership of the organization. The MCAC had recently purchased 64 acres of land adjacent to the railroad tracks from Herman Rabbitt, a successful farmer and landowner in Gaithersburg. On June 4th, 1949, hundreds of volunteers participated in after an old-fashioned barn raising and 12 outbuildings were constructed in one day. The site of the new Montgomery County Agricultural Center was created. Dedicated volunteers donated time, materials and talent to construct and continue operation of the Montgomery County Agricultural Fairgrounds. The Fairgrounds would not be what it is today if it were not for those visionary pioneers who were committed to agricultural education and family entertainment.
As is true today for the agricultural center, the volunteers were, and still are, necessary to the successful operation of the Fairgrounds, through continued contributions of materials and free labor for the construction of the new facilities, as well as upgrading the old. A network of more than 2,000 volunteers continue providing their time, making the agricultural center a vital part of the business community in Montgomery County. The nine day Montgomery County Agricultural Fair that is held in mid-August requires support from over 800 volunteers who assume the responsibility for organizing and producing the single largest annual event in Montgomery County.