The United States federal government defines and delineates the nation's

metropolitan area A metropolitan area or metro is a region that consists of a densely populated urban agglomeration and its surrounding territories sharing industries, commercial areas, transport network, infrastructures and housing. A metro area usually com ...

s for statistical purposes, using a set of standard statistical area definitions. the U.S. Office of Management and Budget (OMB) defined and delineated 392 metropolitan statistical areas (MSAs) and 547 micropolitan statistical areas (μSAs) in the United States and Puerto Rico. Many of these 939 MSAs and μSAs are, in turn, components of larger combined statistical areas (CSAs) consisting of adjacent MSAs and μSAs that are linked by commuting ties; 551 metropolitan and micropolitan areas are components of the 175 defined CSAs. A collective term for MSAs, μSAs, and CSAs is primary statistical areas (PSAs), though that term is not used by OMB. Metropolitan and micropolitan statistical areas are defined as consisting of one or more adjacent counties or county equivalents with at least one urban core area meeting relevant population thresholds, plus adjacent territory that has a high degree of social and economic integration with the core, as measured by commuting ties. A metropolitan statistical area has at least one urban core with a population of at least 50,000. In a micropolitan statistical area, the largest urban core has a population of at least 10,000 but less than 50,000.

Maps

Types and distribution

The sortable table below shows the number of metropolitan and micropolitan statistical areas in each of the U.S. states, the District of Columbia, and Puerto Rico. For each jurisdiction, it lists: #Total number of delineated areas wholly or partially in the named jurisdiction #The number of CSAs wholly or partially in the jurisdiction #The number of core-based statistical areas (i.e., MSAs and µSAs) wholly or partially in the jurisdiction #The number of MSAs wholly or partially in the jurisdiction #The number of µSAs wholly or partially in the jurisdiction #The number of counties and county-equivalents in the jurisdiction Please note: Because many metropolitan and micropolitan areas overlap jurisdictional boundaries, columns are not additive.

List of primary statistical areas

The following

sortable Sort may refer to: * Sorting, any process of arranging items in sequence or in sets ** Sorting algorithm, any algorithm for arranging elements in lists ** Sort (Unix), a Unix utility which sorts the lines of a file ** Sort (C++), a function in the ...

table lists the 569 primary statistical areas (PSAs) of the United States with the following information: #The PSA rank by population as of July 1, 2020 #The PSA name as designated by the United States Office of Management and Budget #The PSA population as of July 1, 2020, as estimated by the United States Census Bureau #The PSA population as of April 1, 2010, as enumerated by the

2010 United States census The United States census of 2010 was the twenty-third United States national census. National Census Day, the reference day used for the census, was April 1, 2010. The census was taken via mail-in citizen self-reporting, with enumerators servin ...

#The percent PSA population change from April 1, 2010, to July 1, 2020 #If the PSA is a combined statistical area, the constituent

core-based statistical area A core-based statistical area (CBSA) is a U.S. geographic area defined by the Office of Management and Budget (OMB) that consists of one or more counties (or equivalents) anchored by an urban center of at least 10,000 people plus adjacent countie ...

Puerto Rico

The following

table lists the five primary statistical areas (PSAs) of Puerto Rico with the following information: #The PSA rank by population as of July 1, 2020, as estimated by the United States Census Bureau #The PSA name as designated by the United States Office of Management and Budget #The PSA population as of July 1, 2020, as estimated by the United States Census Bureau #The PSA population as of April 1, 2010, as enumerated by the

#The percent PSA population change from April 1, 2010, to July 1, 2020 #If the PSA is a combined statistical area, the constituent

References

External links