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The Texas Triangle is a region of
Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...
that contains the state's five largest cities and is home to over half of the state's population. The Texas Triangle is formed by the state's four main urban centers,
Austin Austin refers to: Common meanings * Austin, Texas, United States, a city * Austin (given name), a list of people and fictional characters * Austin (surname), a list of people and fictional characters * Austin Motor Company, a British car manufac ...
, Dallas-Fort Worth,
Houston Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of ...
, and
San Antonio San Antonio ( ; Spanish for " Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio. San Antonio is the third-largest metropolitan area in Texas and the 24th-largest metropolitan area in the ...
, connected by
Interstate 45 Interstate 45 (I-45) is a major Interstate Highway located entirely within the U.S. state of Texas. While most primary Interstate routes which have numbers ending in "5" are cross-country north–south routes, I-45 is comparatively short, ...
,
Interstate 10 Interstate 10 (I-10) is the southernmost transcontinental highway in the Interstate Highway System of the United States. It is the fourth-longest Interstate in the country at , following I-90, I-80, and I-40. It was part of the origina ...
, and
Interstate 35 Interstate 35 (I-35) is a major Interstate Highway in the central United States. As with most primary Interstates that end in a five, it is a major cross-country, north–south route. It stretches from Laredo, Texas, near the Mexican bo ...
. In 2025, the population of the Texas Triangle reached nearly 23 million following rapid growth across much of Texas. The Texas Triangle is one of eleven megaregions in the United States, clusters of urban areas that share economic and cultural ties. In 2004, the Texas Triangle contained five of the 20 largest cities in the U.S. and was home to more than 70% of all Texans, with a population of 13.8 million. In the next 40 years, the population of the Texas Triangle is projected to increase by more than 65%, or 10 million people, and comprise 78% of all Texans. Additional
metropolitan area A metropolitan area or metro is a region consisting of a densely populated urban area, urban agglomeration and its surrounding territories which share Industry (economics), industries, commercial areas, Transport infrastructure, transport network ...
s in the region include Bryan–College Station, Killeen–Temple–Fort Hood, and Waco. Twelve micropolitan statistical areas are within the Triangle, which includes 66 counties. Beaumont, located east of Houston, has been considered part of the Texas Triangle by numerous studies dating from 2000. Burleson County is the center of the Texas Triangle.


Geography

The megaregion is defined in work by America 2050 initiative and others. Dr. Robert Lang of the Metropolitan Institute at
Virginia Tech The Virginia Polytechnic Institute and State University, commonly referred to as Virginia Tech (VT), is a Public university, public Land-grant college, land-grant research university with its main campus in Blacksburg, Virginia, United States ...
characterized Dallas–Fort Worth as one of the earliest recognized megapolitans. Although each city is distinct, Dallas and Fort Worth developed closely enough to form the urban area widely known as the Metroplex. The region contains most of the state's largest cities and
metropolitan areas A metropolitan area or metro is a region consisting of a densely populated urban agglomeration and its surrounding territories which share industries, commercial areas, transport network, infrastructures and housing. A metropolitan area usually ...
, and in 2008 had a total of 17 million people and by 2020 had grown to nearly 21 million, nearly 75% of Texas's total population. The region is comparable to Florida in
population Population is a set of humans or other organisms in a given region or area. Governments conduct a census to quantify the resident population size within a given jurisdiction. The term is also applied to non-human animals, microorganisms, and pl ...
and comparable to Georgia in
area Area is the measure of a region's size on a surface. The area of a plane region or ''plane area'' refers to the area of a shape or planar lamina, while '' surface area'' refers to the area of an open surface or the boundary of a three-di ...
, but the Texas Triangle comprises less than a quarter of Texas's total land area. According to the
University of Texas at Austin The University of Texas at Austin (UT Austin, UT, or Texas) is a public university, public research university in Austin, Texas, United States. Founded in 1883, it is the flagship institution of the University of Texas System. With 53,082 stud ...
Center for Sustainable Development, "the Texas Triangle has three sides measuring 271, 198, and 241 miles in ground distance."


Metropolitan areas

*
Austin Austin refers to: Common meanings * Austin, Texas, United States, a city * Austin (given name), a list of people and fictional characters * Austin (surname), a list of people and fictional characters * Austin Motor Company, a British car manufac ...
Round Rock Round Rock is a city in Williamson County, Texas, Williamson and Travis County, Texas, United States, part of the Greater Austin metropolitan area. Its population is 119,468 according to the 2020 United States Census, 2020 census. The city stra ...
San Marcos metropolitan statistical area * BeaumontPort Arthur metropolitan statistical area * BryanCollege Station metropolitan statistical area *
Dallas Dallas () is a city in the U.S. state of Texas and the most populous city in the Dallas–Fort Worth metroplex, the List of Texas metropolitan areas, most populous metropolitan area in Texas and the Metropolitan statistical area, fourth-most ...
Fort Worth Fort Worth is a city in the U.S. state of Texas and the county seat of Tarrant County, Texas, Tarrant County, covering nearly into Denton County, Texas, Denton, Johnson County, Texas, Johnson, Parker County, Texas, Parker, and Wise County, Te ...
Arlington metropolitan statistical area * Killeen
Temple A temple (from the Latin ) is a place of worship, a building used for spiritual rituals and activities such as prayer and sacrifice. By convention, the specially built places of worship of some religions are commonly called "temples" in Engli ...
(also incl.–
Fort Hood Fort Cavazos is a United States Army post located near Killeen, Texas. The post is currently named after Gen. Richard E. Cavazos, a native Texan and the US Army’s first Hispanic four-star general. The post is located halfway between Austi ...
) metropolitan statistical area * metropolitan statistical area *
San Antonio San Antonio ( ; Spanish for " Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio. San Antonio is the third-largest metropolitan area in Texas and the 24th-largest metropolitan area in the ...
New Braunfels metropolitan statistical area * Sherman–Denison metropolitan area * Waco metropolitan statistical area


Micropolitan areas

* Brenham Micropolitan Statistical Area * Corsicana Micropolitan Statistical Area * Huntsville Micropolitan Statistical Area


Triangle counties

The Texas Triangle contains 65 counties. They are Anderson, Atascosa,
Austin Austin refers to: Common meanings * Austin, Texas, United States, a city * Austin (given name), a list of people and fictional characters * Austin (surname), a list of people and fictional characters * Austin Motor Company, a British car manufac ...
, Bandera, Bastrop,
Bell A bell /ˈbɛl/ () is a directly struck idiophone percussion instrument. Most bells have the shape of a hollow cup that when struck vibrates in a single strong strike tone, with its sides forming an efficient resonator. The strike may be m ...
, Bexar,
Blanco Blanco (''white'' or ''blank'' in Spanish) or Los Blancos may refer to: People *Blanco (surname) Fictional characters *Blanco, a hobbit in J. R. R. Tolkien's Middle-earth *Blanco Webb, character in the BBC sitcom ''Porridge'' *Graboid#El Blanco, ...
,
Bosque A bosque ( ) is a type of gallery forest habitat found along the riparian flood plains of streams, river banks, and lakes. It derives its name from the Spanish word for "forest", pronounced . Setting In the predominantly arid or semiari ...
, Brazoria, Brazos, Burleson, Burnet, Caldwell, Chambers, Collin,
Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...
, Comal, Coryell,
Dallas Dallas () is a city in the U.S. state of Texas and the most populous city in the Dallas–Fort Worth metroplex, the List of Texas metropolitan areas, most populous metropolitan area in Texas and the Metropolitan statistical area, fourth-most ...
, Denton, DeWitt, Ellis, Falls, Fayette, Fort Bend, Freestone,
Galveston Galveston ( ) is a Gulf Coast of the United States, coastal resort town, resort city and port off the Southeast Texas coast on Galveston Island and Pelican Island (Texas), Pelican Island in the U.S. state of Texas. The community of , with a pop ...
, Gonzales,
Grimes Claire Elise Boucher (; born March 17, 1988), known professionally as Grimes, is a Canadian musician, singer, songwriter, and record producer. Her lyrics often touch on science fiction and feminist themes. The visuals in her videos are elabora ...
, Guadalupe, Harris, Hays, Henderson,
Hill A hill is a landform that extends above the surrounding terrain. It often has a distinct summit, and is usually applied to peaks which are above elevation compared to the relative landmass, though not as prominent as Mountain, mountains. Hills ...
,
Houston Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of ...
, Jackson,
Johnson Johnson may refer to: People and fictional characters *Johnson (surname), a common surname in English * Johnson (given name), a list of people * List of people with surname Johnson, including fictional characters *Johnson (composer) (1953–2011) ...
, Kaufman, Kendall,
Lampasas Lampasas ( ) is a city in and the county seat of Lampasas County, Texas, United States. Its population was 7,291 at the 2020 census. Lampasas is part of the Killeen–Temple–Fort Hood metropolitan statistical area. History For his ...
, Lavaca, Lee, Leon,
Liberty Liberty is the state of being free within society from oppressive restrictions imposed by authority on one's way of life, behavior, or political views. The concept of liberty can vary depending on perspective and context. In the Constitutional ...
,
Limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...
, Madison, McLennan,
Medina Medina, officially al-Madinah al-Munawwarah (, ), also known as Taybah () and known in pre-Islamic times as Yathrib (), is the capital of Medina Province (Saudi Arabia), Medina Province in the Hejaz region of western Kingdom of Saudi Arabia, ...
, Milam, Montgomery, Navarro, Rockwall, Robertson, San Jacinto, Tarrant, Travis,
Trinity The Trinity (, from 'threefold') is the Christian doctrine concerning the nature of God, which defines one God existing in three, , consubstantial divine persons: God the Father, God the Son (Jesus Christ) and God the Holy Spirit, thr ...
, Victoria, Walker, Waller, Washington, Wharton, Williamson, and Wilson.


Politics

The Texas Triangle can be considered one of the more politically left-wing areas in Texas due to the anchoring cities of
Houston Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of ...
,
San Antonio San Antonio ( ; Spanish for " Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio. San Antonio is the third-largest metropolitan area in Texas and the 24th-largest metropolitan area in the ...
,
Dallas Dallas () is a city in the U.S. state of Texas and the most populous city in the Dallas–Fort Worth metroplex, the List of Texas metropolitan areas, most populous metropolitan area in Texas and the Metropolitan statistical area, fourth-most ...
,
Austin Austin refers to: Common meanings * Austin, Texas, United States, a city * Austin (given name), a list of people and fictional characters * Austin (surname), a list of people and fictional characters * Austin Motor Company, a British car manufac ...
, and
Fort Worth Fort Worth is a city in the U.S. state of Texas and the county seat of Tarrant County, Texas, Tarrant County, covering nearly into Denton County, Texas, Denton, Johnson County, Texas, Johnson, Parker County, Texas, Parker, and Wise County, Te ...
. All of these cities, and their respective counties of Harris, Bexar,
Dallas Dallas () is a city in the U.S. state of Texas and the most populous city in the Dallas–Fort Worth metroplex, the List of Texas metropolitan areas, most populous metropolitan area in Texas and the Metropolitan statistical area, fourth-most ...
, Travis, and Tarrant, moved towards
Joe Biden Joseph Robinette Biden Jr. (born November 20, 1942) is an American politician who was the 46th president of the United States from 2021 to 2025. A member of the Democratic Party (United States), Democratic Party, he served as the 47th vice p ...
in
2020 The year 2020 was heavily defined by the COVID-19 pandemic, which led to global Social impact of the COVID-19 pandemic, social and Economic impact of the COVID-19 pandemic, economic disruption, mass cancellations and postponements of even ...
, with Biden flipping Tarrant County, which had gone for
Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
in 2016. However in
2024 The year saw the list of ongoing armed conflicts, continuation of major armed conflicts, including the Russian invasion of Ukraine, the Myanmar civil war (2021–present), Myanmar civil war, the Sudanese civil war (2023–present), Sudane ...
, Trump flipped Tarrant county again, when he carried the state with a double-digit margin. Prior to 2008, with the exception of Austin/Travis and San Antonio/Bexar (the latter a former bellwether/swing county and the former a liberal stronghold), all of these cities/counties were conservative strongholds, having voted for Republican presidential candidates from the 1960s through
2004 2004 was designated as an International Year of Rice by the United Nations, and the International Year to Commemorate the Struggle Against Slavery and Its Abolition (by UNESCO). Events January * January 3 – Flash Airlines Flight 60 ...
. This culminated with
Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
flipping Dallas, Harris, and Bexar counties to the Democratic party in 2008. Since
1912 This year is notable for Sinking of the Titanic, the sinking of the ''Titanic'', which occurred on April 15. In Albania, this leap year runs with only 353 days as the country achieved switching from the Julian to Gregorian Calendar by skippin ...
, Travis County consistently has been a liberal stronghold at the presidential level. During this time, it only backed the Republican candidate six times, all Republican landslides except for
2000 2000 was designated as the International Year for the Culture of Peace and the World Mathematics, Mathematical Year. Popular culture holds the year 2000 as the first year of the 21st century and the 3rd millennium, because of a tende ...
. 2000 remains the last time that a Republican presidential candidate captured the county and the last time that a third-party candidate affected the results. This more than likely was due to the somewhat strong showing of third-party candidate
Ralph Nader Ralph Nader (; born February 27, 1934) is an American lawyer and political activist involved in consumer protection, environmentalism, and government reform causes. He is a Perennial candidate, perennial presidential candidate. His 1965 book '' ...
, who polled in a 10.37% vote share, his best in any Texas county, likely due to some Democratic voters voting for Nader instead of for Democratic Party nominee
Al Gore Albert Arnold Gore Jr. (born March 31, 1948) is an American former politician, businessman, and environmentalist who served as the 45th vice president of the United States from 1993 to 2001 under President Bill Clinton. He previously served as ...
. Despite being a liberal stronghold at the presidential level, Travis County has gone Republican more times in Senate races. For example,
Kay Bailey Hutchison Kay Bailey Hutchison (born Kathryn Ann Bailey; July 22, 1943) is an American attorney, television correspondent, politician, diplomat, and was the 22nd United States Permanent Representative to NATO from 2017 until 2021. A member of the Republic ...
won the county in all but one of her Senate bids, that being
2006 2006 was designated as the International Year of Deserts and Desertification. Events January * January 1– 4 – Russia temporarily cuts shipment of natural gas to Ukraine during a price dispute. * January 12 – A stampede during t ...
. Ted Cruz would continue the losing streak, losing the county in both his
2012 2012 was designated as: *International Year of Cooperatives *International Year of Sustainable Energy for All Events January *January 4 – The Cicada 3301 internet hunt begins. * January 12 – Peaceful protests begin in the R ...
and 2018 bids. John Cornyn, in all his senate bids since
2002 The effects of the September 11 attacks of the previous year had a significant impact on the affairs of 2002. The war on terror was a major political focus. Without settled international law, several nations engaged in anti-terror operation ...
has never won this county, despite it being his home county, and it is one of two in the Triangle never to have backed him, the other being Dallas County. Travis County also has gone Republican in gubernatorial races, most recently in
1998 1998 was designated as the ''International Year of the Ocean''. Events January * January 6 – The ''Lunar Prospector'' spacecraft is launched into orbit around the Moon, and later finds evidence for Lunar water, frozen water, in soil i ...
, when George W. Bush won a second term to the governorship. Despite the five biggest cities in Texas being within the Triangle, there are also a great number of rural, conservative counties in the Triangle. It is in these counties that Republicans poll their best.


Transportation

The Texas triangle has also been the subject of rail feasibility studies in particular for high speed rail.


See also

*
Conurbation A conurbation is a region consisting of a number of metropolises, cities, large towns, and other urban areas which, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most ...
* I-35 Corridor *
Megacity A megacity is a very large city, typically with a population of more than 10 million people. The United Nations Department of Economic and Social Affairs (UN DESA) in its 2018 "World Urbanization Prospects" report defines megacities as urban a ...
*
Megalopolis A megalopolis () or a supercity, also called a megaregion, is a group of metropolitan areas which are perceived as a continuous urban area through common systems of transport, economy, resources, ecology, and so on. They are integrated enough ...
*
Metropolis A metropolis () is a large city or conurbation which is a significant economic, political, and cultural area for a country or region, and an important hub for regional or international connections, commerce, and communications. A big city b ...
* Micropolitan statistical area * Texas statistical areas


References


External links


Research on the Texas Triangle
University of Texas at Austin
TexasTriangle.org
{{Texas Regions of Texas Megapolitan areas of the United States Triangles