After every decennial census, the U.S. Census Bureau, using their prescribed methodology, draws a boundary around all built-up land around the United States to delineate an “urbanized area.” Any contiguous urbanized area over 50,000 people triggers it to become a Metropolitan Planning Organization, or MPO. For the MACC, knowing if a road is located in an urban or rural area plays into the amount of federal road funding. Additionally, we work with the Michigan Department of Transportation after the decennial census to come up with a Adjusted Census Urban Boundary, or ACUB. The ACUB refines this concept by aligning the Census Bureau’s statistical definition of urban areas with local or regional planning data. This adjustment ensures that the boundary more accurately reflects the true extent of urban development, accounting for recent growth, annexations, or changes in land use since the last census. In 2000, our urbanized area was 91,795; by 2010, it had grown to 99,941; and by 2020, it had grown to 107,034 people, representing a 16.6% increase in population over 20 years. The current (2020) urbanized area is 64.8 square miles.