The initial area that comprised the Calvert-St. Mary's Metropolitan Planning Organization became a Urbanized Area (UZA) after the 2010 Census when the population in the Lexington Park - California - Chesapeake Ranch Estates region surpassed 50,000 (58,000). This triggered the Federal requirement that these areas form a Metropolitan Planning Organization to coordinate transportation planning between, through and around this Urbanized Area, as it pertains to projects that receive federal funding. The link below (bottom of page) to the Federal Highway Administration's Frequently Asked Questions (FAQs) will answer many questions that our visitors may have about both small (as the C-SMMPO is) and large MPOs. Since the C-SMMPO was initially formed, the Census-designated UZA boundaries were adjusted as shown below, with the original areas in yellow and the expanded areas with green hatching: