1846History
In 1846 the northern bank was gradually developed— still under the name Camargo.
1848Architecture
From its founding in 1848 until the Texas Mexican Railroad opened up in 1883, Rio Grande City was one of the most significant hubs of trade between Texas and Mexico.
1859Civil Rights
Troops were withdrawn on 3 March 1859 but reoccupied again on 29 December 1859 during the Cortina War.
1861Military
The fort was abandoned again at the start of the Civil War in 1861, but reoccupied by US forces in 1865.
1884Government
Immaculate Conception School of the Roman Catholic Diocese of Brownsville, founded in 1884 and the only Catholic school in Starr County, provides a faith-based Pre-K through eig...
1899History
Among its contributing structures is the La Borde House, which dates to 1899.
1906History
Measurable snowfall has occurred only three times: 3.0 inches (0.076 m) on February 7, 1906, 2.5 inches (0.063 m) on January 10, 1967, and 3.0 inches (0.076 m) on Christmas Day,...
1940History
The coolest complete month has been January 1940 which averaged 50.0 °F or 10.0 °C, although the coolest mean maximum was January 1977’s 60.4 °F or 15.8 °C.
1944Military
The fort was active until 1944 when the property was sold to the Rio Grande City public schools system.
1950Military
forces in Iraq; retired from the United States Army
== Demographics ==
Rio Grande City first appeared as an unincorporated community in the 1950 U.S.
1967Economy
The wettest year on record has been 1967 with 48.35 inches or 1,228.1 millimeters, and the lowest annual rainfalls 5.28 inches or 134.1 millimeters in 1902, 8.55 inches or 217.2...
1980History
census; and as a census designated place in the 1980 United States census.
1993Government
In May 1993, Rio Grande City was officially incorporated as a municipal corporation (i.e.
2000Government
After incorporation, Rio Grande City was listed as a city the 2000 U.S.
2010History
The city gained area prior to the 2010 census giving it a total area of 11.4 square miles (30.0 km2), all land.
2020History
=== Racial and ethnic composition ===
=== 2020 census ===
As of the 2020 census, there were 15,317 people, 4,689 households, and 2,880 families residing in the city.