Micropolitan statistical area

Population United States micropolitan statistical areas (μSA, where the initial Greek letter mu represents "micro-"), 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 (urban area) with a population of at least 10,000 but fewer than 50,000 people.

[1] 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.

[2] The term "micropolitan" gained currency in the 1990s to describe growing population centers in the United States that are removed from larger cities, in some cases by 100 miles (160 km) or more.

That would put its total population ahead of roughly 100 individual locations classified as a metropolitan statistical area in 2010.

[4] The following sortable table lists the 538 μSAs of the incorporated United States (the 50 states and the District of Columbia) with the following information: The following sortable table lists the 4 μSAs (USAs) of Puerto Rico with the following information:

An enlargeable map of the 939 core-based statistical areas (CBSAs) of the United States and Puerto Rico as of 2020. The 392 metropolitan statistical areas (MSAs) are shown in medium green . The 547 micropolitan statistical areas (μSAs) are shown in light green .