A Core-Based Statistical Area (CBSA) is a census bureau term applied to all statistical area designations based on a central city of at least 10,000 population. It includes both Metropolitan Statistical Areas and Micropolitan Statistical Areas.
A Metropolitan Statistical Area (MSA) includes one or more counties with a central urban area having a population of at least 50,000 inhabitants. The U.S. Census Bureau uses MSAs for the purposes of aggregating and reporting population, housing, and economic statistics.
