Combined statistical area

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.

United States{{anchor|List of Combined Statistical Areas}}

(181) and Puerto Rico (3) as defined in 2023 This table lists the 181 combined statistical areas (CSAs) of the United States with the following information: • The CSA rank by population as of July 1, 2025, as estimated by the U.S. Census Bureau • The CSA name as designated by the United States Office of Management and Budget • The CSA population as of July 1, 2025, as estimated by the United States Census Bureau • The CSA population as of April 1, 2020, as enumerated by the 2020 United States census • The percent CSA population change from April 1, 2020, to July 1, 2025 • The core-based statistical areas (CBSAs) that constitute the CSA Metropolitan statistical areas that are not also combined with other MSAs or CBSAs are not listed below. ==Puerto Rico==

Puerto Rico

This table lists the three combined statistical areas (CSAs) of Puerto Rico with the following information: • The CSA rank by population as of July 1, 2025, as estimated by the United States Census Bureau • The CSA name as designated by the United States Office of Management and Budget • The CSA population as of July 1, 2025, as estimated by the United States Census Bureau • The CSA population as of April 1, 2020, as enumerated by the 2020 United States census • The percent CSA population change from April 1, 2020, to July 1, 2025 • The core-based statistical areas (CBSAs) that constitute the CSA ==See also==

Source: Wikipedia ↗

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