This list of regions of the United States includes official (governmental) and non-official areas within the borders of the United States, not including U.S. states, the federal district of Washington, D.C. or standard subentities such as cities or counties. Defunct, extinct or archaic regions are described in historic regions of the United States. (See also: Template:U.S. regions)
This list is incomplete; you can help by expanding it.
Interstate regions
Official U.S. regions
Regions defined in law or regulations by the federal government.
Bureau of Reclamation Regions
Bureau of Reclamation regions
The Bureau of Reclamation divides the western United States into five regions:
Census Bureau-designated areas
U.S. Census Bureau regions
Regional divisions used by the United States Census Bureau
Standard Federal Regions

Standard Federal Regions
The ten standard Federal Regions were established by OMB (Office of Management and Budget) Circular A-105, "Standard Federal Regions," in April, 1974, and required for all executive agencies. In recent years, some agencies have tailored their field structures to meet program needs and facilitate interaction with local, state and regional counterparts. The OMB must still approve any departures, however.
- Region I: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
- Region II: New Jersey, New York, Puerto Rico, Virgin Islands
- Region III: Delaware, Maryland, Pennsylvania, Virginia, West Virginia
- Region IV: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee
- Region V: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin
- Region VI: Arkansas, Louisiana, New Mexico, Texas, Oklahoma
- Region VII: Iowa, Kansas, Missouri, Nebraska
- Region VIII: Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming
- Region IX: Arizona, California, Hawaii, Nevada (American Samoa, Guam, Northern Mariana Islands, Trust Territory of the Pacific Islands)
- Region X: Alaska, Idaho, Oregon, Washington
Judicial circuits
U.S. judicial circuits
As designated by Congress, the federal court system is divided into eleven judicial circuits, each with its own United States Court of Appeals. (There are also a District of Columbia Circuit and a Federal Circuit, both of which sit in Washington D.C. and have special, non-geographic jurisdictions.)
- 1st Circuit (Courthouse in Boston, Massachusetts)
- 2nd Circuit (Courthouse in New York, New York)
- 3rd Circuit (Courthouse in Philadelphia, Pennsylvania)
- 4th Circuit (Courthouse in Richmond, Virginia)
- 5th Circuit (Courthouse in New Orleans, Louisiana)
- 6th Circuit (Courthouse in Cincinnati, Ohio)
- 7th Circuit (Courthouse in Chicago, Illinois)
- 8th Circuit (Courthouse in St. Louis, Missouri)
- 9th Circuit (meeting places vary from California to Alaska, but headquarters are in San Francisco, California)
- 10th Circuit (Courthouse in Denver, Colorado)
- 11th Circuit (Courthouse in Atlanta, Georgia)
Federal Reserve banks
Federal Reserve districts
The Federal Reserve Act of 1913 divided the country into twelve regions with a central Reserve Bank in each.
The Federal Reserve Districts are as follows:
- Boston
- New York
- Philadelphia
- Cleveland
- Richmond
- Atlanta
- Chicago
- St Louis
- Minneapolis
- Kansas City
- Dallas
- San Francisco
Time Zones
U.S. time zones
Main article: United States time zones
Unofficial U.S. multi-state regions
The "Belts"
Main article: "Belt" regions of the United States
Interstate metropolitan areas
Interstate megalopolises
Intrastate regions

The Alaska Panhandle
The Arizona Strip
Main article: Regions of Arizona
Connecticut Panhandle and "The Oblong"
The First Coast
Florida Panhandle
Main article: Regions of Illinois

The Little Egypt region of Illinois

Kentucky\'s regions (click on image for color coding information.)
Map of Louisiana regions
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Regions of the Lower Peninsula of Michigan
Main article: Geography of Minnesota

Regions of Minnesota
Missouri Bootheel
Nebraska Panhandle

Regions of New York as defined by the New York State Department of Economic Development


The Great Black Swamp roughly covered the black area within the green shaded counties.

Oklahoma Panhandle
Main article: Pennsylvania Regions

Pennsylvania\'s Pocono region counties
Major Regions
Travel/Tourism Regions
Other Regions
Grand Divisions
Main article: Grand Divisions (Tennessee)
Geographic Divisions
Texas Panhandle
Map of the Shenandoah Valley
See also