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U.S. Census Bureau regions and divisions. Since 1950, the United States Census Bureau defines four statistical regions, with nine divisions. [1] [2] The Census Bureau region definition is "widely used... for data collection and analysis", [3] and is the most commonly used classification system.
Economic regions of the United States (5 C, 2 P) Ecoregions of the United States (13 C, 137 P) G. Geologic provinces of the United States (9 C, 14 P)
The term "United States," when used in the geographic sense, refers to the contiguous United States (sometimes referred to as the Lower 48, including the District of Columbia not as a state), Alaska, Hawaii, the five insular territories of Puerto Rico, Northern Mariana Islands, U.S. Virgin Islands, Guam, American Samoa, and minor outlying possessions. [1]
The physiographic regions of the contiguous United States comprise 8 divisions, 25 provinces, and 85 sections. [1] The system dates to Nevin Fenneman's report Physiographic Divisions of the United States, published in 1916. [2] [3] The map was updated and republished by the Association of American Geographers in 1928. [4]
The United States of America is a federal republic [1] consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands. [2] [3] Both the states and the United States as a whole are each sovereign jurisdictions. [4]
The lowering of the allowable "jump distance" from 2.5 to 1.5 miles. A jump is a distance along a road to connect two urban territories surrounded by rural territory. Largely as a result of the change in criteria, the proportion of American citizens living in urban areas fell between 2010 and 2020, from 80.7% to 80.0%. [ 1 ]
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. [ 1 ] [ 2 ] Such regions are not legally incorporated as a city or town would be and are not legal administrative divisions like counties or separate entities ...
Wine regions of the United States by state or territory (41 C, 31 P) A. Regions of Alabama (1 C, 17 P) Regions of Alaska (8 C, 15 P) Regions of Arizona (6 C, 21 P)