Name all US Metropolitan and Micropolitan Statistical Areas. They are typically named after the largest city but occasionally with a 2nd or 3rd largest city, which are also accepted answers – also this central ‘city’ may be a town, village, CDP, etc. The OMB defines a Core Based Statistical Area as one or more adjacent counties or county equivalents that have at least one urban core area of at least 10,000 population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties.