This is a list of some of the ways regions are defined in the United States. Many regions are defined in law or regulations by the federal government; others by shared culture and history, and others by economic factors.
Interstate regions
Census Bureau-designated regions and divisions
Since 1950, 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",
["The National Energy Modeling System: An Overview 2003" (Report #: DOE/EIA-0581, October 2009). United States Department of Energy, Energy Information Administration.] and is the most commonly used classification system.
["The most widely used regional definitions and 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. ]["Most 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. ]
| + U.S. Census Bureau Regional Divisions
|
|
|
| Mid-Atlantic |
|
|
| West North Central |
|
|
| East South Central |
|
| West South Central |
|
|
| Pacific |
|
|
Puerto Rico and other US territories are not part of any census region or census division.
Federal Reserve Banks
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
system of the United States.
Missouri is the only U.S. state to have two Federal Reserve locations within its borders, but several other states are also divided between more than one district.
-
Boston
-
New York
-
Philadelphia
-
Cleveland
-
Richmond
-
Atlanta
-
Chicago
-
St. Louis
-
Minneapolis
-
Kansas City
-
Dallas
-
San Francisco
Time zones
-
(Baker Island, Howland Island)
-
Samoa Time Zone (American Samoa, Jarvis Island, Kingman Reef, Midway Atoll, Palmyra Atoll)
-
Hawaii–Aleutian Time Zone (Hawaii, Aleutian Islands, Johnston Atoll)
-
Alaska Time Zone (Alaska, excluding Aleutian Islands)
-
Pacific Time Zone
-
Arizona Time Zone (excluding the Navajo Nation)
-
Mountain Time Zone (excluding most parts of Arizona)
-
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
-
First Circuit
-
Second Circuit
-
Third Circuit
-
Fourth Circuit
-
Fifth Circuit
-
Sixth Circuit
-
Seventh Circuit
-
Eighth Circuit
-
Ninth Circuit
-
Tenth Circuit
-
Eleventh Circuit
-
D.C. Circuit
The Federal Circuit is not a regional circuit. Its jurisdiction is nationwide but based on the subject matter.
Agency administrative regions
In 1969, the Office of Management and Budget published a list of ten "Standard Federal Regions",
to which federal agencies could be restructured as a means of standardizing government administration nationwide. Despite a finding in 1977 that this restructuring did not reduce administrative costs as initially expected,
and the complete rescinding of the standard region system in 1995,
several agencies continue to follow the system, including the Environmental Protection Agency
and the Department of Housing and Urban Development.
Regions and office locations
Region I
Office location:
Boston
States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont
Region II
Office location: New York City
States: New York, New Jersey, Puerto Rico, and the U.S. Virgin Islands
Region III
Office location:
Philadelphia
States: Delaware, Maryland, Pennsylvania, Virginia, Washington, D.C., and West Virginia
Region IV
Office location:
Atlanta
States: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee
Region V
Office location:
Chicago
States: Illinois, Indiana, Minnesota, Michigan, Ohio, and Wisconsin
Region VI
Office location:
Dallas
States: Arkansas, Louisiana, New Mexico, Oklahoma, and Texas
Region VII
Office location:
Kansas City
States: Iowa, Kansas, Missouri, and Nebraska
Region VIII
Office location:
Denver
States: Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming
Region IX
Office location:
San Francisco
States: Arizona, California, Hawaii, Nevada, Guam, Northern Mariana Islands, American Samoa, U.S. Minor Outlying Islands in the Pacific, the Freely Associated States of the Federated States of Micronesia, and the Palau.
Region X
Office location:
Seattle
States: Alaska, Idaho, Oregon, and Washington
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, Maryland, New Jersey, New York, Pennsylvania, and Washington, D.C.
-
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
Unofficial regions
Multi-state regions
Multi-territory regions
The Belts
Interstate megalopolises
-
Arizona Sun Corridor
-
California
-
Cascadia
-
Great Lakes
-
Gulf Coast
-
Northeast
-
Piedmont Atlantic
-
Southern Rocky Mountain Front
Interstate metropolitan areas
-
Augusta metropolitan area (parts of Georgia and South Carolina)
-
Central Savannah River Area (part of Georgia and South Carolina)
-
Baltimore–Washington metropolitan area (Washington, D.C. and parts of Maryland, Virginia, West Virginia, and Pennsylvania)
-
Washington metropolitan area (District of Columbia and parts of Maryland, Virginia, and West Virginia)
-
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)
-
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)
-
Hartford-Springfield (parts of Connecticut and Massachusetts)
-
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)
-
South Bend-Mishawaka metropolitan area (parts of Indiana and Michigan)
-
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)
-
Philadelphia metropolitan area (parts of Pennsylvania, New Jersey, Delaware, and Maryland)
-
Portland metropolitan area (parts of Oregon and Washington)
-
Providence metropolitan area (parts of Rhode Island and Massachusetts)
-
Quad Cities (parts of Iowa and Illinois)
-
Sioux City metropolitan area (parts of Iowa, Nebraska, and South Dakota)
-
Sioux Falls metropolitan area (parts of South Dakota and Minnesota)
-
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 (parts of Virginia and North Carolina)
-
Youngstown–Warren–Boardman metropolitan statistical area (parts of Ohio and Pennsylvania)
Intrastate and intraterritory regions
Alabama
Regions of
Alabama include:
Alaska
Regions of
Alaska include:
American Samoa
Regions of
American Samoa include:
Arizona
Regions of
Arizona include:
Arkansas
Regions of
Arkansas include:
California
Colorado
Regions of
Colorado include:
-
Central Colorado (part of Southern Rocky Mountains)
-
Colorado Eastern Plains (part of High Plains)
-
Colorado Mineral Belt (part of Southern Rocky Mountains)
-
Colorado Piedmont (parts of the Front Range Urban Corridor and Colorado High Plains)
-
Colorado Plateau (multi-state region)
-
Colorado Western Slope (parts of Southern Rocky Mountains and Colorado Plateau)
-
Denver Metropolitan Area (part of Front Range Urban Corridor)
-
Four Corners (multi-state region of Colorado Plateau)
-
Front Range Urban Corridor (multi-state region)
-
High Plains (multi-state region of Great Plains)
-
Mesa Verde
-
North Central Colorado Urban Area (part of Front Range Urban Corridor)
-
Northwestern Colorado (part of Southern Rocky Mountains)
-
San Luis Valley
-
South-Central Colorado
-
South Central Colorado Urban Area (part of Front Range Urban Corridor)
-
Southern Rocky Mountains (multi-state region of Rocky Mountains)
-
Southwestern Colorado (parts of Southern Rocky Mountains and Colorado Plateau)
Connecticut
Connecticut has nine official planning regions, which operate as councils of governments and are recognized as county equivalents by the U.S. Census Bureau. The nine regions are:
-
Capitol Region
-
Greater Bridgeport
-
Lower Connecticut River Valley
-
Naugatuck Valley
-
Northeastern Connecticut
-
Northwest Hills
-
South Central Connecticut
-
Southeastern Connecticut
-
Western Connecticut
Some of Connecticut's informal regions include:
Delaware
Regions of
Delaware include:
-
"Upstate" or "Up North":
-
Delaware Valley, also known as "Above the Canal" (referring to the Chesapeake and Delaware Canal)
"Slower Lower":
District of Columbia
Florida
Directional regions of
Florida include:
Local vernacular regions of Florida include:
Georgia
Regions of Georgia include:
Physiographic regions
Physiographic regions of Georgia include:
-
Appalachian Plateau
-
Blue Ridge Mountains
-
Coastal Plain
-
Piedmont
-
Ridge-and-Valley Appalachians
Guam
Regions of
Guam include:
Hawaii
Regions of
Hawaii include:
-
Hawaiʻi Island (Big Island)
-
Kahoʻolawe
-
Kauaʻi
-
Kaʻula
-
Lānaʻi
-
Maui
-
Molokaʻi
-
Niʻihau
-
Northwestern Hawaiian Islands
-
Oʻahu
-
Kaʻena Point
-
Makapuʻu
-
North Shore
-
Waikīkī
Idaho
Regions of
Idaho include:
Illinois
Regions of
Illinois include:
Indiana
Regions of
Indiana include:
Iowa
Regions of
Iowa include:
Kansas
Regions of
Kansas include:
Kentucky
Regions of
Kentucky include:
Louisiana
Regions of
Louisiana include:
- * Cajun Heartland
- * River Parishes
Maine
Regions of
Maine include:
Maryland
Regions of
Maryland include:
Regions of Maryland shared with other states include:
-
Allegheny Mountains
-
Atlantic coastal plain
-
Blue Ridge Mountains
-
Cumberland Valley
-
Delaware Valley
-
Delmarva Peninsula consists of Maryland's and Virginia's Eastern Shore and all of Delaware
-
Piedmont (United States)
-
Ridge-and-Valley Appalachians
Massachusetts
Regions of
Massachusetts include:
-
Central Massachusetts
-
MetroWest
-
Montachusett-North County
-
South County
-
Blackstone River Valley
-
Northeastern Massachusetts
-
Southeastern Massachusetts
-
Cape Cod and Islands
-
South Coast
-
South Shore
-
Western Massachusetts
Michigan
Regions of
Michigan include:
Lower Peninsula
Upper Peninsula
-
Western Upper Peninsula
-
Central Upper Peninsula
-
Eastern Upper Peninsula
Minnesota
Regions of
Minnesota include:
Mississippi
Regions of
Mississippi include:
Missouri
Regions of
Missouri include:
Montana
Regions of
Montana include:
Nebraska
Regions of
Nebraska include:
Nevada
Regions of
Nevada include:
New Hampshire
Regions of
New Hampshire include:
-
Connecticut River Valley
-
Dartmouth-Lake Sunapee Region (overlaps with Connecticut River Valley)
-
Great North Woods Region
-
Lakes Region
-
Merrimack Valley
-
Monadnock Region (overlaps with Connecticut River Valley)
-
Seacoast Region
-
White Mountains
New Jersey
Regions of
New Jersey include:
New Mexico
Regions of
New Mexico include:
-
Central New Mexico
-
Eastern New Mexico
-
New Mexico Bootheel
-
Northern New Mexico
New York
states as defined by the Empire State Development Corporation
Regions of New York]]
The ten regions of New York, as defined by the Empire State Development Corporation:
-
Capital District – counties : Albany, Columbia, Greene, Warren, Washington, Saratoga, Schenectady, Rensselaer
-
Central New York – counties: Cortland, Cayuga, Onondaga, Oswego, Madison
-
Finger Lakes – counties: Orleans, Genesee, Wyoming, Monroe, Livingston, Wayne, Ontario, Yates, Seneca
-
Hudson Valley – counties: Sullivan, Ulster, Dutchess, Orange, Putnam, Rockland, Westchester
-
Long Island – counties: Nassau, Suffolk
-
Mohawk Valley – counties: Oneida, Herkimer, Fulton, Montgomery, Otsego, Schoharie
-
New York City – counties (boroughs): New York (Manhattan), Bronx (The Bronx), Queens (Queens), Kings (Brooklyn), Richmond (Staten Island)
-
North Country – counties : St. Lawrence, Lewis, Jefferson, Hamilton, Essex, Clinton, Franklin
-
Southern Tier – counties: Steuben, Schuyler, Chemung, Tompkins, Tioga, Chenango, Broome, Delaware
-
Western New York – counties: Niagara, Erie, Chautauqua, Cattaraugus, Allegany
Regions of New York state include:
-
Downstate New York
-
Upstate New York
North Carolina
Regions of
North Carolina include:
-
Eastern North Carolina
-
Central North Carolina
-
Piedmont Crescent
-
Metropolitan Charlotte (Metrolina)
-
Piedmont Triad
-
Sauratown Mountains
-
Uwharrie Mountains
-
Yadkin Valley
-
The Research Triangle
-
Western North Carolina
-
Foothills Region
-
High Country (Boone Area)
-
Land of the Sky
-
Asheville Metropolitan Area
-
Blue Ridge Mountains
-
Great Smoky Mountains
North Dakota
Regions of
North Dakota include:
Northern Mariana Islands
Regions of the Northern Mariana Islands include:
Ohio
Regions of
Ohio include:
-
Allegheny Plateau
-
Appalachian Ohio
-
Cincinnati-Northern Kentucky metropolitan area
-
Columbus, Ohio metropolitan area
-
Connecticut Western Reserve (historic)
-
Firelands
-
Great Black Swamp (shared with Indiana)
-
Knobs region
-
Lake Erie Islands
-
Miami Valley
-
Northeast Ohio (often used interchangeably with Greater Cleveland, but also includes the counties of Ashtabula, Portage, Summit, Trumbull, Mahoning and Columbiana.)
-
Northwest Ohio
-
Pennyroyal
Oklahoma
Regions of
Oklahoma include:
Oregon
Regions of
Oregon include:
Pennsylvania
Regions of
Pennsylvania include:
Puerto Rico
Regions of
Puerto Rico include:
Rhode Island
Regions of
Rhode Island include:
-
Blackstone Valley
-
Block Island
-
East Bay
-
West Bay
-
South County
South Carolina
Regions of
South Carolina include:
-
The Lowcountry
-
The Midlands
-
The Upstate
-
Travel/Tourism locations
-
Grand Strand
-
Lake Murray Country
-
The Lowcountry & Resort Islands
-
Old 96 District
-
Olde English District
-
Pee Dee
-
Santee Cooper Country
-
Other geographical distinctions:
South Dakota
Regions of
South Dakota include:
Tennessee
The Grand Divisions of
Tennessee include:
Texas
Regions of
Texas include:
U.S. Minor Outlying Islands
Regions of United States Minor Outlying Islands include:
U.S. Virgin Islands
Regions of United States Virgin Islands include:
Utah
Regions of
Utah include:
Vermont
Regions of
Vermont include:
Virginia
Regions of
Virginia include:
-
Eastern Shore
-
Greater Richmond Region
-
Hampton Roads
-
Historic Triangle
-
Northern Neck
-
Northern Virginia
-
Piedmont region of Virginia
-
Shenandoah Valley
-
South Hampton Roads
-
Southside Virginia
-
Southwest Virginia
-
Tidewater
-
Tri-Cities
-
Tsenacommacah
-
Virginia Peninsula
Washington
Regions of Washington include:
West Virginia
Regions of
West Virginia include:
-
Eastern Panhandle
-
North Central West Virginia
-
Northern Panhandle
-
Potomac Highlands
-
Southern West Virginia
Wisconsin
Wisconsin is divided into five geographic regions:
-
Central Plain
-
Eastern Ridges and Lowlands
-
Lake Superior Lowland
-
Northern Highland
-
Western Upland
Wyoming
Regions of
Wyoming include:
See also
-
Geography of the United States
-
Historic regions of the United States
-
List of metropolitan areas of the United States
-
Media market, e.g., Nielsen Designated Market Area
-
Political divisions of the United States
-
Regional stock exchanges of the United States
-
United States territory
-
Vernacular geography
-
U.S. Caribbean region
Notes
External links