Houston is the largest city in the U.S. state of Texas and the fourth-largest city in the United States, a Gulf Coast metropolis built on a coastal plain along Buffalo Bayou. Founded in 1836 and shaped first by cotton and shipping, then by oil, and later by spaceflight, Houston has grown into one of the most ethnically diverse and economically significant cities in the country.

Where Is Houston Located?

Houston sits in southeastern Texas on the Gulf Coastal Plain, roughly 50 miles inland from the Gulf of Mexico, straddling Buffalo Bayou in Harris County. The city covers about 665 square miles, while the wider metropolitan area spans 9,444 square miles across nine counties and holds more than 7 million residents. The City of Houston’s own facts page notes that greater Houston is one of the most ethnically diverse metropolitan areas in the United States, with at least 145 languages spoken among residents and 90 nations holding consular representation there.

A Brief History of Houston

Houston was founded on August 30, 1836, by brothers Augustus Chapman Allen and John Kirby Allen, who platted a townsite on Buffalo Bayou and named it after Sam Houston, the general who had just led Texas forces to victory at the Battle of San Jacinto. The town briefly served as the capital of the Republic of Texas beginning in 1837, growing from a handful of residents to roughly 1,500 within its first few months, according to the Handbook of Texas, published by the Texas State Historical Association in partnership with the University of North Texas.

The city’s early economy centered on cotton trading and bayou commerce. The opening of the Houston Ship Channel in 1914 turned an inland town into a deepwater port, and the discovery of oil at nearby Spindletop in 1901 set off a boom that, by 1929, had drawn forty oil companies to establish offices in the city. Refineries along the ship channel helped make Houston a global energy capital by the 1970s. In 1961, NASA selected Houston as the site of its new Manned Spacecraft Center, later renamed the Johnson Space Center, cementing the city’s role in the American space program.

Houston’s Economy and Culture

Houston’s economy remains anchored by energy, but it has diversified into healthcare, aerospace, shipping, and manufacturing. The city is home to the Texas Medical Center, widely described as the largest concentration of medical institutions in the world, and to the Port of Houston, one of the busiest in the United States by tonnage. Houston is also known as the largest city in the country without conventional municipal zoning, a distinctive approach to land use that has shaped its famously sprawling, multi-centered layout. The city operates under a mayor-council form of government, with an elected mayor, a city controller, and a city council overseeing municipal departments.

A City Without Zoning

Unlike nearly every other major American city, Houston has never adopted a comprehensive zoning ordinance, relying instead on deed restrictions and land-use regulations. This has allowed rapid, flexible development but has also produced a famously decentralized city with multiple commercial hubs rather than a single dominant downtown core.

What Is Houston Known For?

Houston is best known today as “Space City,” home to NASA’s Johnson Space Center and its Christopher C. Kraft Jr. Mission Control Center, which has directed every American human spaceflight since 1965, including the Apollo Moon landings. It was from this control room that flight controllers monitored the words “Houston, we’ve had a problem,” radioed from Apollo 13 in 1970, a phrase that permanently linked the city’s name to American spaceflight. Mission Control continues to oversee astronauts aboard the International Space Station and is planning operations for NASA’s Artemis lunar program, according to NASA.

Why Houston Matters

Houston matters both as an economic engine, anchoring one of the largest metropolitan economies in the United States through energy, trade, and medicine, and as a symbol of American technological ambition through its enduring association with human spaceflight. Its scale, diversity, and informal urban form also make it a frequently studied example of how a major city can grow without conventional zoning controls.

Key Takeaways

• Houston was founded in 1836 by the Allen brothers and named for Sam Houston, hero of the Texas Revolution.
• It is the fourth-largest city in the United States and the largest in Texas, with a metropolitan area of more than 7 million people.
• The Houston Ship Channel and the 1901 Spindletop oil discovery transformed Houston into a global energy and shipping hub.
• NASA’s Johnson Space Center and its Mission Control Center, based in Houston, have directed American human spaceflight since 1965.
• Houston is the largest U.S. city without a comprehensive zoning ordinance, producing a famously decentralized urban layout.

Sources

• City of Houston, “Facts and Figures”
• Texas State Historical Association / University of North Texas, “Houston, TX,” Handbook of Texas
• NASA, “Mission Control Center”

Editorially reviewed by Specialty Digest Editorial TeamLast reviewed October 5, 2026Researched and drafted with AI assistanceReport an issue