This is a list of some of the regions in the United States.
Official regions of the United States
Many regions in the United States are defined in law or regulations by the federal government.
Census Bureau-designated regions and divisions
U.S. Census Bureau Regions and Divisions.
The United States Census Bureau defines four statistical regions, with nine divisions. The Census Bureau region definition is "widely used… for data collection and analysis," and is the most commonly used classification system.
Regional divisions used by the United States Census Bureau:
- Region 1: Northeast
- Region 2: Midwest (Prior to June 1984, the Midwest Region was designated as the North Central Region.)
- Division 3: East North Central (Illinois, Indiana, Michigan, Ohio, and Wisconsin)
- Division 4: West North Central (Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota)
- Region 3: South
- Division 5: South Atlantic (Delaware, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, District of Columbia, and West Virginia)
- Division 6: East South Central (Alabama, Kentucky, Mississippi, and Tennessee)
- Division 7: West South Central (Arkansas, Louisiana, Oklahoma, and Texas)
- Region 4: West
- Division 8: Mountain (Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming)
- Division 9: Pacific (Alaska, California, Hawaii, Oregon, and Washington)
Puerto Rico and other US territories are not part of any census region or census division.
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. However, the OMB must still approve any departures.
- Region I: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
- Region II: New Jersey, New York, Puerto Rico, US Virgin Islands
- Region III: Delaware, District of Columbia, 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, Oklahoma, Texas
- 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
Federal Reserve banks
Federal Reserve districts.
The Federal Reserve Act of 1913 divided the country into twelve districts with a central Federal Reserve Bank in each district. These twelve Federal Reserve Banks together form a major part of the Federal Reserve System, the central banking system of the United States. Missouri is the only U.S. state to have two Federal Reserve locations within its borders.
- New York
- St. Louis
- Kansas City
- San Francisco
- UTC−12:00 (Baker Island, Howland Island)
- Samoa Time Zone (American Samoa, Jarvis Island, Kingman Reef, Midway Atoll, Palmyra Atoll)
- Hawaii–Aleutian Time Zone (Hawaii, Aleutian Islands (Alaska), Johnston Atoll)
- Alaska Time Zone (Alaska, excluding Aleutian Islands)
- Pacific Time Zone
- Mountain Time Zone
- Central Time Zone
- Eastern Time Zone
- Atlantic Time Zone (Puerto Rico, U.S. Virgin Islands)
- Chamorro Time Zone (Guam, Northern Mariana Islands)
- Wake Island Time Zone (Wake Island)
Courts of Appeals circuits
U.S. Courts of Appeals circuits.
The Federal Circuit is not a regional circuit. Its jurisdiction is nationwide, but based on subject matter.
Bureau of Economic Analysis regions
Bureau of Economic Analysis regions.
The Bureau of Economic Analysis defines regions for comparison of economic data. 
- New England: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont
- Mideast: Delaware, District of Columbia, Maryland, New Jersey, New York, Pennsylvania
- Great Lakes: Illinois, Indiana, Michigan, Ohio, and Wisconsin
- Plains: Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota
- Southeast: Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia
- Southwest: Arizona, New Mexico, Oklahoma, and Texas
- Rocky Mountain: Colorado, Idaho, Montana, Utah, and Wyoming
- Far West: Alaska, California, Hawaii, Nevada, Oregon, and Washington
Energy Information Administration
The Energy Information Administration currently uses the PADD system established by Petroleum Administration for War in World War II. It is used for data collection on refining petroleum and its products. Each PADD is subdivided into refining districts.
- PADD I: East Coast
- East Coast: Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New Jersey, Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, Florida; along with counties in New York east of, north of and including Cayuga, Tompkins, and Chemung; and counties in Pennsylvania east of and including Bradford, Sullivan, Columbia, Montour, Northumberland, Dauphin and York.
- Appalachian No. 1: West Virginia along with counties of Pennsylvania and New York State not mentioned above.
- PADD II: Midwest
- Indiana-Illinois-Kentucky: Indiana, Illinois, Kentucky, Tennessee, Michigan, Ohio
- Minnesota-Wisconsin-North and South Dakota: Minnesota, Wisconsin, North Dakota, South Dakota
- Oklahoma-Kansas-Missouri: Oklahoma, Kansas, Missouri, Nebraska, Iowa
- PADD III: Gulf Coast
- Texas Gulf Coast: The Texan counties of Newton, Orange, Jefferson, Jasper, Tyler, Hardin, Liberty, Chambers, Polk, San Jacinto, Montgomery, Harris, Galveston, Waller, Fort Bend, Brazoria, Wharton, Matagorda, Jackson, Victoria, Calhoun, Refugio, Aransas, San Patricio, Nueces, Kleberg, Kenedy, Willacy and Cameron
- Texas Inland: Texan counties not mentioned above.
- Louisiana Gulf Coast: Parishes of Louisiana south of, and including Vernon, Rapides, Avoyelles, Pointe Coupee, West Feliciana, East Feliciana, Saint Helena, Tangipahoa and Washington; along with Pearl River, Stone, George, Hancock, Harrison, and Jackson County of Mississippi; and Alabama's Mobile and Baldwin County.
- North Louisiana-Arkansas: Arkansas and parts of Louisiana, Mississippi and Alabama not mentioned above.
- New Mexico: New Mexico
- PADD IV: Rocky Mountain: Colorado, Montana, Idaho, Wyoming, Utah
- PADD V: West Coast: Washington, Oregon, California, Nevada, Arizona, Alaska, Hawaii
PADD I can also be subdivided into 3 Subdistricts:
- Sub-PAD 1A: New England (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont)
- Sub-PAD 1B: Central Atlantic (Delaware, Maryland, New Jersey, New York, Pennsylvania, District of Columbia)
- Sub-PAD 1C: Lower Atlantic (Florida, Georgia, North Carolina, South Carolina, Virginia, West Virginia)
PADD system was established in World War II and therefore don't accurately reflect current trends. The EIA has updated the PADD system with a complimentary set of regions to reflect this and will change it to suite current needs. (Note: Region 9 includes countries not part of the USA but is included for the sake of completion since it contains Puerto Rico)
- Region 1: PADD I
- Region 2: PADD II "Inland" (States of North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Missouri, Iowa, Tennessee and Kentucky)
- Region 3: PADD II "Lakes" (States of Minnesota, Wisconsin, Illinois, Michigan, Indiana and Ohio)
- Region 4: PADD III "Gulf" (Refining districts of Texas Gulf Coast and Louisiana Gulf Coast)
- Region 5: PADD III "Inland" (Refining districts of Texas Inland, New Mexico and North Louisiana-Arkansas)
- Region 6: PADD IV
- Region 7: PADD V "California" (State of California)
- Region 8: PADD V "Other" (States of Alaska, Arizona, Hawaii, Nevada, Oregon and Washington)
- Region 9: "International"
Unofficial U.S. multi-state and multi-territory regions
There are also multi-territory regions:
Interstate metropolitan areas
- Central Savannah River Area (part of Georgia and South Carolina)
- Baltimore–Washington metropolitan area (District of Columbia and parts of Maryland, Virginia, West Virginia, and Pennsylvania)
- Greater Boston (parts of Massachusetts, Rhode Island, and New Hampshire)
- Charlotte metropolitan area (parts of North Carolina and South Carolina)
- Chattanooga Metropolitan Area
- Chicago metropolitan area (parts of Illinois, Indiana, and Wisconsin)
- Cincinnati metropolitan area (parts of Ohio, Indiana, and Kentucky)
- Columbus-Auburn-Opelika (GA-AL) Combined Statistical Area (parts of Georgia and Alabama)
- Delaware Valley (Philadelphia metropolitan area) (parts of Pennsylvania, New Jersey, Delaware, and Maryland)
- Evansville, IN–KY Metropolitan Statistical Area (parts of Indiana and Kentucky)
- Fargo–Moorhead (parts of North Dakota and Minnesota)
- Fort Smith metropolitan area (parts of Arkansas and Oklahoma)
- Front Range Urban Corridor (parts of Colorado and Wyoming)
- Greater Grand Forks (part of Minnesota and North Dakota)
- Kansas City metropolitan area (parts of Missouri and Kansas)
- Louisville metropolitan area (Kentuckiana) (parts of Kentucky and Indiana)
- Memphis metropolitan area (parts of Tennessee, Arkansas, and Mississippi)
- Michiana (parts of Michigan and Indiana)
- Minneapolis–Saint Paul (the Twin Cities) (parts of Minnesota and Wisconsin)
- New York metropolitan area (parts of New York, New Jersey, Connecticut, and Pennsylvania)
- Omaha–Council Bluffs metropolitan area (parts of Nebraska and Iowa)
- Portland metropolitan area (parts of Oregon and Washington)
- Quad Cities (parts of Iowa and Illinois)
- Sacramento metropolitan area (parts of California and Nevada)
- Greater St. Louis (parts of Missouri and Illinois)
- Texarkana metropolitan area (parts of Texas and Arkansas)
- Tri-Cities (parts of Tennessee and Virginia)
- Twin Ports (Duluth, Minnesota and Superior, Wisconsin)
- Hampton Roads region (parts of Virginia and North Carolina)
- Youngstown–Warren–Boardman metropolitan statistical area (parts of Ohio and Pennsylvania)
Intrastate and intraterritory regions
A map of Alabama regions.
An enlargeable map of the Front Range Urban Corridor of Colorado and Wyoming
In Connecticut, there are 14 official regions, each with a regional government that serves for the absence of county government in Connecticut. There are also a fair number of unofficial regions in Connecticut with no regional government.
"Upstate" or "Up North"
District of Columbia
See Neighborhoods in the District of Columbia
- Directional regions
- Local vernacular regions
Southern Illinois is also known as "Little Egypt".
A map of Louisiana's regions.
Regions shared with other states:
Regions of New York as defined by the New York State Department of Economic Development.
1. Western New York
– counties : Niagara, Erie, Chautauqua, Cattaraugus, Allegany
2. Finger Lakes
– counties : Orleans, Genesee, Wyoming, Monroe, Livingston, Wayne, Ontario, Yates, Seneca
3. Southern Tier
– counties : Steuben, Schuyler, Chemung, Tompkins, Tioga, Chenango, Broome, Delaware
4. Central New York
– counties : Cortland, Cayuga, Onondaga, Oswego, Madison
5. North Country
– counties : St. Lawrence, Lewis, Jefferson, Hamilton, Essex, Clinton, Franklin
6. Mohawk Valley
– counties : Oneida, Herkimer, Fulton, Montgomery, Otsego, Schoharie
7. Capital District
– counties : Albany, Columbia, Greene, Warren, Washington, Saratoga, Schenectady, Rensselaer
8. Hudson Valley
– counties : Sullivan, Ulster, Dutchess, Orange, Putnam, Rockland, Westchester
9. New York City
– counties (boroughs) : New York (Manhattan), Bronx (The Bronx), Queens (Queens), Kings (Brooklyn), Richmond (Staten Island)
10. Long Island
– counties : Nassau, Suffolk
Regions of North Carolina.
Northern Mariana Islands
- Travel/Tourism locations
- Other geographical distinctions
South Dakota East River West River
- Other geographical distinctions:
U.S. Minor Outlying Islands
Other regional listings
Boy Scouts of America regions in 1992
- Regions of the Boy Scouts of America
- ^ United States Census Bureau, Geography Division. "Census Regions and Divisions of the United States" (PDF). Retrieved 2013-01-10.
- ^ "The National Energy Modeling System: An Overview 2003" (Report #:DOE/EIA-0581, October 2009). United States Department of Energy, Energy Information Administration.
- ^ "The most widely used regional definitions follow those of the U.S. Bureau of the Census." Seymour Sudman and Norman M. Bradburn, Asking Questions: A Practical Guide to Questionnaire Design (1982). Jossey-Bass: p. 205.
- ^ "Perhaps the most widely used regional classification system is one developed by the U.S. Census Bureau." Dale M. Lewison, Retailing, Prentice Hall (1997): p. 384. ISBN 978-0-13-461427-4
- ^ "(M)ost demographic and food consumption data are presented in this four-region format." Pamela Goyan Kittler, Kathryn P. Sucher, Food and Culture, Cengage Learning (2008): p.475. ISBN 9780495115410
- ^ a b "Census Bureau Regions and Divisions with State FIPS Codes" (PDF). US Census Bureau. Archived from the original (PDF) on 21 September 2013. Retrieved 20 June 2010.
- ^ "Geographic Terms and Concepts - Census Divisions and Census Regions". US Census Bureau. Retrieved 19 August 2015.
- ^ "BEA Regions". Bureau of Economic Analysis. February 18, 2004. Retrieved December 27, 2012.
- ^ "Records of Petroleum Administration for War". Retrieved January 3, 2012.
- ^ "Appedix A: District Description and Maps" (PDF). Energy Information Administration. October 2012. Retrieved January 3, 2012.
- ^ "PADD Definitions". Energy Information Administration. Archived from the original on October 16, 2011. Retrieved January 3, 2012.
- ^ "Annual Energy Outlook 2012". Energy Information Administration. June 25, 2012. Retrieved January 3, 2012.