Cameron County is the southernmost county in the U.S. state of Texas. As of the 2020 census, its population was 421,017. Its county seat is Brownsville.
The county was founded in 1848 and is named for Captain Ewen Cameron, a soldier during the Texas Revolution and in the ill-fated Mier Expedition. During the later 19th century and through World War II, Fort Brown was a US Army outpost here, stimulating the development of the city of Brownsville.
Padre Island is the largest of the Texas barrier islands and the world's longest barrier island. The island is located along Texas's southern coast of the Gulf of Mexico and is noted for its white sandy beaches. Meaning father in Spanish, it was named after Father José Nicolás Ballí (c.1770-1829), who owned the island and served as a missionary priest and collector of finances for all the churches in the Rio Grande Valley. He also founded the first mission in present-day Cameron County.
Padre Island is the second-largest island by area in the contiguous United States, after Long Island in New York on the Atlantic Coast. It is about 113 miles (182 km) long and 1.8 miles (3 km) wide, stretching from the city of Corpus Christi, in the north, to the resort community of South Padre Island in the south. The island is oriented north-south, bordered by the Gulf of Mexico on the east and Laguna Madre on the west. The island's northern end connects to Mustang Island by roadway. The southern end of the island is separated from Brazos Island by the Brazos Santiago Pass.
Brownsville (/ˈbraʊnzvɪl/ BROWNZ-vil) is a city in the U.S. state of Texas and the county seat of Cameron County, located on the western Gulf Coast in South Texas, adjacent to the border with Matamoros, Tamaulipas, Mexico. The city covers 145.2 sq mi (376.066 km), and had a population of 186,738 at the 2020 census. As of the 2020 U.S. census, it is the 136th-most populous city in the United States and 18th-most populous in Texas. It is part of the Matamoros–Brownsville metropolitan area. The city is known for its year-round subtropical climate, deep-water seaport, and Hispanic culture.
The city was founded in 1848 by American entrepreneur Charles Stillman after he developed a successful river-boat company nearby. It was named for Fort Brown, itself named after Major Jacob Brown, who fought and died while serving as a U.S. Army soldier during the Mexican–American War (1846–1848). As a county seat, the city and county governments are major employers. Other primary employers fall within the service, trade, and manufacturing industries, including a growing aerospace and space transportation sector. It operates international trading through the Port of Brownsville. The city experienced a population increase in the early 1900s, when steel production flourished.
Boca Chica is an area on the eastern portion of a subdelta peninsula of Cameron County, at the far south of the US state of Texas along the Gulf Coast. It is bordered by the Brownsville Ship Channel to the north, the Rio Grande and Mexico to the south, and the Gulf of Mexico to the east. The area extends about 25 miles (40 km) east of the city of Brownsville. The peninsula is served by Texas State Highway 4—also known as the Boca Chica Highway or Boca Chica Boulevard—which runs east–west, terminating at the Gulf and Boca Chica Beach.
The Boca Chica area has seen various developments over the course of its history. These include Mexican land grants, Mexican and American ranches, a battlefield of the American Civil War, a 1920s beach resort, and a state park (Boca Chica State Park); additionally, a small settlement named Boca Chica Village existed in the area from 1960 to 2020. In recent years, the area has become more widely known due to being the site of Starbase, a major facility of aerospace company SpaceX for the development, manufacturing and testing of its rockets. Starbase is the primary launch and recovery facility for SpaceX's Starship launch vehicle.
Resaca is the name given to a type of oxbow lake in the southern half of Cameron County, Texas. The resacas constitute former channels of the Rio Grande and are naturally cut off from the river, having no inlet or outlet.
South Padre Island is a resort town in Cameron County, Texas, United States. It is part of the Brownsville-Harlingen metropolitan area. The population was 2,066 at the 2020 census. The town is located on South Padre Island, a barrier island with the Laguna Madre situated to the leeward of the island and the Gulf of Mexico on the windward flank, along the Texas Gulf Coast. South Padre Island is accessible via the Queen Isabella Causeway from the town of Port Isabel. South Padre Island is named after José Nicolás Ballí (Padre Ballí), a Catholic priest and settler.
The island is only accessible via the Queen Isabella Causeway and has become a popular tourist destination for both the spring, summer and for winter Texans. It features many activities such as ecotourism, fishing, snorkeling, kiteboarding, parasailing, surfing and horse back riding. SpaceX Starships are launched from the SpaceX Starbase facility and can be observed across the Brazos Santiago Pass in Boca Chica, Texas.
The Laguna Madre is a long, shallow, hypersaline lagoon along the western coast of the Gulf of Mexico in Nueces, Kenedy, Kleberg, Willacy and Cameron Counties in Texas, United States. It is one of seven major estuaries along the Gulf Coast of Texas. The roughly 20-mile (32 km) long Saltillo Flats land bridge divides it into Upper and Lower lagoons joined by the Intracoastal Waterway, which has been dredged through the lagoon. Cumulatively, Laguna Madre is approximately 130 miles (210 km) long, the length of Padre Island in the US. The main extensions include Baffin Bay in Upper Laguna Madre, Red Fish Bay just below the Saltillo Flats, and South Bay near the Mexican border. As a natural ecological unit, the Laguna Madre of the United States is the northern half of the ecosystem as a whole, which extends into Tamaulipas, Mexico approximately 144 miles (232 km) south of the US border, to the vicinity of the Rio Soto La Marina and the town of La Pesca, extending approximately 275 miles (443 km) through USA and Mexico in total.
The lagoon's ecosystem is protected by the Laguna Atascosa National Wildlife Refuge and the Padre Island National Seashore, as well as the privately owned King Ranch. The human history predates the formation of the Laguna Madre, and settlements have been established at Port Isabel and Port Mansfield on the lagoon's shores.
Brazos Island, also known as Brazos Santiago Island, is a barrier island on the Gulf Coast of Texas in the United States, south of the town of South Padre Island and north of the city of Starbase. The island is located in Cameron County.
Brazos Santiago Pass partitions the barrier islands of Brazos Island and Padre Island in the Lower Rio Grande Valley.
Starbase, formerly Boca Chica Village or Kopernik Shores, is a city in Cameron County, Texas, United States, near the mouth of the Rio Grande. It lies 20 miles (32 km) east of the City of Brownsville on the Boca Chica peninsula, and forms part of the Brownsville–Harlingen–Raymondville and the Matamoros–Brownsville metropolitan areas. It is situated on State Highway 4, (SH 4, Boca Chica Boulevard), immediately south of the South Bay lagoon, and is located about 2 mi (3.2 km) north of the mouth of the Rio Grande. The population was 500 as of 2025.
The town was initially formed in the late 1960s, and has changed greatly since 2018 as SpaceX came to purchase many of the properties in the village. Numerous construction projects are underway including a community center, school, clinic, and additional housing. In 2014, the village was chosen as the location for the construction of a control facility for the SpaceX South Texas launch site, while the launch site itself was slated to be built just 2 miles (3.2 km) farther east, adjacent to Boca Chica State Park on the Texas Gulf Coast. Flight testing—and even more frequent ground testing—of prototype rocket vehicles and rocket engines began in 2019 and have continued into 2025.