Oklahoma City, officially the City of Oklahoma City, and often shortened to OKC, is the capital and most populous city of the U.S. state of Oklahoma. The county seat of Oklahoma County, its population ranks 20th among United States cities and 8th in the Southern United States. The population grew following the 2010 census and reached 681,054 in the 2020 census. The Oklahoma City metropolitan area had a population of 1,396,445, and the Oklahoma City–Shawnee Combined Statistical Area had a population of 1,469,124, making it Oklahoma's largest municipality and metropolitan area by population.
The Dallas–Fort Worth metroplex, officially designated Dallas–Fort Worth–Arlington by the U.S. Office of Management and Budget, is the most populous metropolitan statistical area in the U.S. state of Texas and the Southern United States, encompassing 11 counties. Its historically dominant core cities are Dallas and Fort Worth. It is the economic and cultural hub of North Texas. Residents of the area also refer to it as DFW or the Metroplex. The Dallas–Fort Worth–Arlington metropolitan statistical area's population was 7,637,387 according to the U.S. Census Bureau's 2020 census, making it the fourth-largest metropolitan area in the U.S. and the eleventh-largest in the Americas. In 2016, the Dallas–Fort Worth metroplex had the highest annual population growth in the United States. By 2023, the U.S. Census Bureau estimated that the Dallas-Fort Worth metropolitan area's population had increased to 8,100,037, with the highest numerical growth of any metropolitan area in the United States.
The Boise, Idaho Metropolitan Statistical Area (MSA) is an area that encompasses Ada, Boise, Canyon, Gem, and Owyhee counties in southwestern Idaho, anchored by the cities of Boise and Nampa. It is the main component of the wider Boise–Mountain Home–Ontario, ID–OR Combined Statistical Area, which adds Elmore and Payette counties in Idaho and Malheur County, Oregon. It is the state's largest officially designated metropolitan area and includes Idaho's three largest cities: Boise, Nampa, and Meridian. Nearly 40 percent of Idaho's total population lives in the area.
The Portland metropolitan area is a metro area with its core in the U.S. states of Oregon and Washington. It has 5 principal cities, the largest being Portland, Oregon. The U.S. Office of Management and Budget (OMB) identifies it as the Portland–Vancouver–Hillsboro, OR–WA Metropolitan Statistical Area, a metropolitan statistical area used by the United States Census Bureau (USCB) and other entities. The OMB defines the area as comprising Clackamas, Columbia, Multnomah, Washington, and Yamhill Counties in Oregon, and Clark and Skamania Counties in Washington. The area had a population of 2,512,859 at the 2020 census, an increase of over 12% since 2010.
The Washington metropolitan area, also referred to as the D.C. area, Greater Washington, the National Capital Region, or locally as the DMV, is the metropolitan area centered around Washington, D.C., the federal capital of the United States. The metropolitan area includes all of Washington, D.C. and parts of Maryland, Virginia, and West Virginia. It is part of the larger Washington–Baltimore combined statistical area, which is the third-largest combined statistical area in the country.
Oklahoma City is near the geographic center of the United States and is an integral point on the U.S. Interstate Network. The city is served by numerous roads and highways, toll roads, three major airports, a train station, a bus station, and a transit system.
The Jacksonville Metropolitan Area, also called the First Coast, Metro Jacksonville, or Northeast Florida, is the metropolitan area centered on the principal city of Jacksonville, Florida and including the First Coast of North Florida. As of the 2020 United States census, the total population was 1,605,848. The Jacksonville–Kingsland–Palatka, FL–GA Combined Statistical Area (CSA) had a population of 1,733,937 in 2020 and was the 34th largest CSA in the United States. The Jacksonville metropolitan area is the 40th largest in the country and the fourth largest in the State of Florida, behind the Miami, Tampa, and Orlando metropolitan areas.
The Lake Charles metropolitan statistical area is a metropolitan area in the Acadiana region of southwest Louisiana that covers three parishes—Calcasieu, Cameron, and Jefferson Davis. According to a 2023 census estimate, the MSA had a population of 240,082. It is also part of the larger Lake Charles–DeRidder combined statistical area which had a population of 276,909 in 2023. The Lake Charles MSA also shares borders with the Beaumont–Port Arthur metropolitan area to the west. Metropolitan Lake Charles, the principal city, is commonly referred to as the Lake Area.
The Binghamton Metropolitan Statistical Area, also called Greater Binghamton or the Triple Cities, is a region of southern Upstate New York in the Northeastern United States, anchored by Binghamton. The MSA encompasses Broome and Tioga counties, which together had a population of 247,138 as of the 2020 census. From 1963 to 1983, the MSA also included neighboring Susquehanna County in Pennsylvania, part of which still falls in the Binghamton, NY–PA Urban Area. In addition to these three counties, the greater region includes parts of Delaware and Chenango counties in New York; portions of Cortland and Otsego counties in New York and Wayne County, Pennsylvania are sometimes considered part of the region as well. Using the definition of a 30-mile radius from Binghamton, the population as of the 2010 census is 317,331.
The Pensacola metropolitan area is the metropolitan area centered on Pensacola, Florida. It is also known as the Pensacola–Ferry Pass–Brent Metropolitan Statistical Area, a metropolitan statistical area (MSA) used for statistical purposes by the United States Census Bureau and other agencies. The Pensacola Standard Metropolitan Statistical Area was first defined in 1958, with Pensacola as the principal city, and included Escambia and Santa Rosa counties. The MSA was renamed Pensacola–Ferry Pass–Brent MSA in 2003, with the unincorporated census-designated places Ferry Pass and Brent added as principal cities. The population of the MSA in the 2020 census was 511,502.
The Deltona–Daytona Beach–Ormond Beach, Florida Metropolitan Statistical Area is a metropolitan statistical area (MSA) in central and the north portions of Florida consisting of Volusia and Flagler counties in the state of Florida. As of 2023, it is the 83rd-largest MSA in the United States, with a census-estimated population of 721,796.
The Charleston Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of three counties in West Virginia, anchored by the city of Charleston. It is the largest metropolitan area entirely within the state of West Virginia. The Huntington Metro Area adds to the Charleston–Huntington, WV-OH-KY CSA and spans three states, while the core county of the Charleston area, Kanawha County, is more populous than the West Virginia portion of the Huntington area.
The Youngstown–Warren, OH Metropolitan Statistical Area, typically known as the Mahoning Valley, is a metropolitan area in Northeast Ohio with Youngstown, Ohio, at its center. According to the U.S. Census Bureau, the metropolitan statistical area (MSA) includes Mahoning and Trumbull counties. As of the 2020 census, the region had a population of 430,591, making it the 125th-largest metro area in the country.
The Tulsa metropolitan area, officially defined as the Tulsa metropolitan statistical area is a metropolis in northeastern Oklahoma centered around the city of Tulsa and encompassing Tulsa, Rogers, Wagoner, Osage, Creek, Okmulgee and Pawnee counties. It had a population of 1,044,757 according to the 2023 U.S. census estimates.
Greater San Antonio, officially designated San Antonio–New Braunfels, is an eight-county metropolitan area in the U.S. state of Texas defined by the Office of Management and Budget (OMB). The metropolitan area straddles South Texas and Central Texas and is on the southwestern corner of the Texas Triangle. The official 2020 U.S. census showed the metropolitan area's population at 2,558,143—up from a reported 1,711,103 in 2000—making it the 24th largest metropolitan area in the United States. Downtown Austin and Downtown San Antonio are approximately 80 miles (129 km) apart, and both fall along the Interstate 35 corridor. This combined metropolitan region of San Antonio–Austin has approximately 5 million people.
The Austin–Round Rock–San Marcos metropolitan statistical area, or Greater Austin, is a five-county metropolitan area in the U.S. state of Texas, as defined by the Office of Management and Budget. The metropolitan area is situated in Central Texas on the western edge of the American South and on the eastern edge of the American Southwest, and borders Greater San Antonio to the south.
The Sherman–Denison metropolitan statistical area, as defined by the United States Census Bureau, is an area consisting of one county—Grayson—in North Texas, anchored by the cities of Sherman and Denison. According to the 2010 U.S. census, the MSA had a population of 120,877; according to 2021 estimates, it had a population of 139,336. The Sherman–Denison MSA is a component of the Dallas-Ft. Worth combined statistical area, which covers a 19-county area and had an estimated population of 8,057,796 as of July 1, 2009. It is also a major part of the Texoma region with proximity to both Lake Texoma and the Red River.
The Tyler metropolitan area, or Greater Tyler area centered on the city of Tyler, Texas, is one of the largest Texan metropolitan areas in East Texas. It had a combined population of 216,080 according to the 2010 U.S. census, and 233,479 in 2020. The Tyler metropolitan area encompasses all of Smith County.
Metro Dayton or the Miami Valley, or more formally the Dayton–Kettering–Beavercreek, OH Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of three counties in the Miami Valley region of Ohio and is anchored by the city of Dayton. As of 2020, it is the fourth-largest metropolitan area in Ohio and the 73rd-largest metropolitan area by population in the United States with a population of 814,049.
The Savannah metropolitan area, officially named the Savannah metropolitan statistical area by the U.S. Office of Management and Budget, is a metropolitan statistical area in the U.S. state of Georgia. It is centered on the city of Savannah and encompasses three counties: Bryan, Chatham, and Effingham.
United States 
Oklahoma 
