# Statistical area

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The [United States federal government](/source/Federal_government_of_the_United_States) defines and delineates the nation's [metropolitan areas](/source/Metropolitan_area) for statistical purposes, using a set of standard **statistical area** definitions. As of 2023 , the U.S. [Office of Management and Budget](/source/Office_of_Management_and_Budget) (OMB) defined and delineated 393 [metropolitan statistical areas](/source/Metropolitan_statistical_area) (MSAs) and 542 [micropolitan statistical areas](/source/Micropolitan_statistical_area) (μSAs) in the United States and Puerto Rico.[1] Many of these 935 MSAs and μSAs are, in turn, components of larger [combined statistical areas](/source/Combined_statistical_area) (CSAs) consisting of adjacent MSAs and μSAs that are linked by [commuting](/source/Commuting) ties; as of 2023 , 582 metropolitan and micropolitan areas are components of the 184 defined CSAs.

Metropolitan and micropolitan statistical areas are defined as consisting of one or more adjacent [counties](/source/County_(United_States)) or [county equivalents](/source/County-equivalent) with at least one [urban core area](/source/List_of_United_States_urban_areas) meeting relevant population thresholds, plus adjacent territory that has a high degree of social and [economic integration](/source/Economic_integration) with the core, as measured by commuting ties. A metropolitan statistical area has at least one [core](/source/Urban_area) with a population of at least 50,000. In a micropolitan statistical area, the largest core has a population of at least 10,000 but less than 50,000.

## Types and distribution

The sortable table below shows the number of combined, metropolitan and micropolitan statistical areas in each of the [U.S. states](/source/U.S._state), the [District of Columbia](/source/Washington,_D.C.), and [Puerto Rico](/source/Puerto_Rico) as of 2023. For each jurisdiction, it lists:

1. Total number of delineated areas wholly or partially in the named jurisdiction[1]
1. The number of CSAs wholly or partially in the jurisdiction[1]
1. The number of core-based statistical areas (i.e., MSAs and μSAs) wholly or partially in the jurisdiction[1]
1. The number of MSAs wholly or partially in the jurisdiction[1]
1. The number of μSAs wholly or partially in the jurisdiction[1]

Number of statistical areas in the United States and Puerto Rico[a] Jurisdiction Delineated areas CSAs Core-based areas MSAs μSAs Alabama[2] 35 9 26 13 13 Alaska 4 0 4 2 2 Arizona 13 2 11 7 4 Arkansas[2] 25 4 21 7 14 California 42 7 35 25 10 Colorado 20 3 17 7 10 Connecticut[2] 9 2 7 5 2 Delaware[2] 4 1 3 2 1 Florida[2] 35 7 28 22 6 Georgia[2] 46 7 39 15 24 Hawaii 4 0 4 2 2 Idaho[2] 22 5 17 7 10 Illinois[2] 47 14 33 12 21 Indiana[2] 50 10 40 15 25 Iowa[2] 31 7 24 9 15 Kansas[2] 25 3 22 7 15 Kentucky[2] 32 8 24 9 15 Louisiana[2] 25 6 19 10 9 Maine 5 1 4 3 1 Maryland[2] 13 3 10 6 4 Massachusetts[2] 12 2 10 7 3 Michigan[2] 43 8 35 16 19 Minnesota[2] 34 6 28 9 19 Mississippi[2] 27 6 21 4 17 Missouri[2] 31 6 25 7 18 Montana 7 0 7 5 2 Nebraska[2] 16 3 13 4 9 Nevada 10 2 8 3 5 New Hampshire[2] 8 2 6 2 4 New Jersey[2] 9 3 6 6 0 New Mexico 19 2 17 4 13 New York[2] 34 7 27 13 14 North Carolina[2] 48 9 39 15 24 North Dakota[2] 9 1 8 4 4 Ohio[2] 55 11 44 15 29 Oklahoma[2] 28 6 22 5 17 Oregon[2] 24 4 20 8 12 Pennsylvania[2] 48 12 36 20 16 Rhode Island[2] 2 1 1 1 0 South Carolina[2] 20 4 16 10 6 South Dakota[2] 14 2 12 3 9 Tennessee[2] 34 7 27 10 17 Texas[2] 80 13 67 26 41 Utah[2] 12 1 11 5 6 Vermont[2] 8 2 6 1 5 Virginia[2] 19 4 15 11 4 Washington[2] 29 6 23 13 10 West Virginia[2] 20 5 15 10 5 Wisconsin[2] 40 11 29 15 14 Wyoming[2] 10 0 10 2 8 District of Columbia[3] 2 1 1 1 0 United States 1106 181 925 387 538 Puerto Rico 13 3 10 6 4 United States & Puerto Rico 1119 184 935 393 542

## See also

- [United States of America](/source/United_States) - [Outline of the United States](/source/Outline_of_the_United_States)
- [Demographics of the United States](/source/Demographics_of_the_United_States) - [United States Census Bureau](/source/United_States_Census_Bureau) - [List of U.S. states and territories by population](/source/List_of_U.S._states_and_territories_by_population) - [List of United States cities by population](/source/List_of_United_States_cities_by_population) - [List of U.S. cities by adjusted per capita personal income](/source/List_of_U.S._cities_by_adjusted_per_capita_personal_income) - [List of United States counties and county equivalents](/source/List_of_United_States_counties_and_county_equivalents) - [United States Office of Management and Budget](/source/Office_of_Management_and_Budget) - Statistical area (United States) - [Combined statistical area](/source/Combined_statistical_area) - [Core-based statistical area](/source/Core-based_statistical_area) ([list](/source/List_of_core-based_statistical_areas)) - [Metropolitan statistical area](/source/Metropolitan_statistical_area) - [Micropolitan statistical area](/source/Micropolitan_statistical_area)

## Notes

## References

1. ["OMB Bulletin No. 23-01: Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas"](https://bidenwhitehouse.archives.gov/wp-content/uploads/2023/07/OMB-Bulletin-23-01.pdf). [United States Office of Management and Budget](/source/United_States_Office_of_Management_and_Budget). July 21, 2023. Retrieved May 2, 2024.

1. This state shares one or more statistical areas with one or more other states.

1. The [District of Columbia](/source/Washington,_D.C.) shares both its statistical areas with nearby states.

## External links

- [United States Government](http://www.usa.gov/) - [United States Census Bureau](https://www.census.gov/) - [2010 United States Census](https://web.archive.org/web/20100320084325/http://2010.census.gov/2010census/) - [USCB population estimates](https://web.archive.org/web/20141218204847/http://www.census.gov/popest/data/index.html) - [United States Office of Management and Budget](https://www.whitehouse.gov/omb/)

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