In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the region. Such regions are not legally incorporated as a city or town would be and are not legal administrative divisions like counties or separate entities such as states. As a result, sometimes the precise definition of a given metropolitan area will vary between sources. The statistical criteria for a standard metropolitan area were defined in 1949 and redefined as a metropolitan statistical area in 1983.
A core-based statistical area (CBSA) is a U.S. geographic area defined by the Office of Management and Budget (OMB). It contains a large population nucleus, or urban area, and adjacent communities that have a high degree of integration with that nucleus.
United States micropolitan statistical areas, as defined by the Office of Management and Budget (OMB), are labor market and statistical areas in the United States centered on an urban cluster with a population of at least 10,000 but fewer than 50,000 people. The micropolitan area designation was created in 2003. Like the better-known metropolitan statistical areas, a micropolitan area is a geographic entity used for statistical purposes based on counties and county equivalents. On July 21, 2023, the Office of Management and Budget released revised delineations of the various CBSAs in the United States, which recognized 542 micropolitan areas in the United States, four of which are in Puerto Rico.
The Danville Micropolitan Statistical Area is a Micropolitan Statistical Area (μSA) in Virginia as defined by the United States Office of Management and Budget (OMB). As of the 2010 census, the μSA had a population of 106,561
Combined statistical area (CSA) is a United States Office of Management and Budget (OMB) term for a combination of adjacent metropolitan (MSA) and micropolitan statistical areas (μSA) across the 50 U.S. states and the territory of Puerto Rico that can demonstrate economic or social linkage. CSAs were first designated in 2003. OMB defines a CSA by various combinations of adjacent metropolitan and micropolitan areas with economic ties measured by commuting patterns. CSAs retain their own designations as metropolitan or micropolitan statistical areas in their respective larger combined statistical areas.
The Lexington-Fayette metropolitan area is the 109th-largest metropolitan statistical area (MSA) in the United States. It was originally formed by the United States Census Bureau in 1950 and consisted solely of Fayette County until 1980 when surrounding counties saw increases in their population densities and the number of their residents employed within Lexington-Fayette, which led to them meeting Census criteria to be added to the MSA.
The Terre Haute Metropolitan Statistical Area, also known as the Wabash Valley, is the 227th largest Metropolitan Statistical Area (MSA) in the United States. Centering on the city of Terre Haute, Indiana, it was originally formed by the United States Census Bureau in 1950 and consisted of Vigo County. As surrounding counties saw an increase in their population densities and the number of their residents employed within Vigo County, they met Census criteria to be added to the MSA. Four Indiana counties are now a part of this MSA.
The U.S. State of Illinois currently has 43 statistical areas that have been delineated by the Office of Management and Budget (OMB). On March 6, 2020, the OMB delineated 11 combined statistical areas, 13 metropolitan statistical areas, and 19 micropolitan statistical areas in Illinois.
The Knoxville metropolitan area, commonly known as Greater Knoxville, is a metropolitan statistical area (MSA) centered on Knoxville, Tennessee, the third largest city in Tennessee and the largest city in East Tennessee. It is the third largest metropolitan area in Tennessee. In 2020, the Knoxville metro area had a population of 879,773, and a population of 903,300 including Grainger County. The Knoxville–Morristown–Sevierville Combined Statistical Area (CSA) had a population of 1,156,861 according to the census bureau in 2020.
The Mansfield–Ashland–Bucyrus, OH Combined Statistical Area is a CSA in the U.S. state of Ohio, as defined by the United States Census Bureau. It consists of the Mansfield Metropolitan Statistical Area ; and the Bucyrus–Galion Micropolitan Statistical Area, and, since 2020, the Ashland Micropolitan Statistical Area. As of the 2020 Census, the CSA had a population of 219,408.
The Salt Lake City metropolitan area is the metropolitan area centered on the city of Salt Lake City, Utah. The Office of Management and Budget and the United States Census Bureau currently define the Salt Lake City, Utah Metropolitan Statistical Area as comprising two counties: Salt Lake and Tooele. As of the 2020 census, the MSA had a population of 1,257,936. The Salt Lake City Metropolitan Area and the Ogden-Clearfield Metropolitan Area were a single metropolitan area known as the Salt Lake City-Ogden Metropolitan Area until being separated in 2005.
The Salisbury, MD Metropolitan Statistical Area is a United States Census Bureau-designated metropolitan area centered in and around Salisbury, Maryland, including two counties in Maryland: Somerset and Wicomico. Until 2023, the Salisbury MSA also included Worcester County.
The Montgomery, Alabama Metropolitan Statistical Area is a metropolitan area in central Alabama. As of 2020, the MSA had a population of 386,047, ranking it 142nd among United States Metropolitan Statistical Areas. That number is up +3.07% from the 2010 census number of 374,536.
The Dothan Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of Geneva, Henry, and Houston counties in southeastern Alabama, anchored by the city of Dothan, county seat of Houston County. As of the 2010 census, the MSA had a population of 145,639.
The Safford Micropolitan Statistical Area, as defined by the United States Census Bureau, is a micropolitan statistical area (μSA) consisting of one county in eastern Arizona, anchored by the city of Safford.
The Martinsville Micropolitan Statistical Area is a United States Micropolitan Statistical Area (USA) in Virginia, as defined by the Office of Management and Budget (OMB) as of June, 2003. As of the 2000 census, the μSA had a population of 73,346.
The Madison, Wisconsin, metropolitan area, also known as Greater Madison, is the metropolitan area surrounding the city of Madison, Wisconsin. Madison is the state capital of Wisconsin and is Wisconsin's second largest city, and the metropolitan area is also the state's second largest which the Madison MSA borders to its east.
The Lafayette-West Lafayette, Indiana Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of three counties in Indiana, anchored by the cities of Lafayette and West Lafayette. As of the July 1, 2021, the MSA had an estimated population of 224,709. Metro area population in 2021 is 237,130 and was 235,066 in 2020, a growth of 16% over 2010. In 2010, the Lafayette, Indiana, metro area population was 210,297.
The United States federal government defines and delineates the nation's metropolitan areas for statistical purposes, using a set of standard statistical area definitions. As of 2023, the U.S. Office of Management and Budget (OMB) defined and delineated 393 metropolitan statistical areas (MSAs) and 542 micropolitan statistical areas (μSAs) in the United States and Puerto Rico. Many of these 935 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; as of 2023, 582 metropolitan and micropolitan areas are components of the 184 defined CSAs. A collective term for MSAs, μSAs, and CSAs is primary statistical areas (PSAs), though that term is not used by OMB.
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