Rio Grande City is a city in and the county seat of Starr County, Texas. The population was 13,834 at the 2010 census. The city is 41 miles (66 km) west of McAllen. The city also holds the March record high for the United States at 108 degrees Fahrenheit. The city is connected to Camargo, Tamaulipas, via the Rio Grande City–Camargo International Bridge. The city is situated within the Rio Grande Valley.
Rio Grande City is located at 26°22′50″N 98°49′6″W / 26.38056°N 98.81833°W / 26.38056; -98.81833 (26.380667, −98.818364).
The city gained area prior to the 2010 census giving it a total area of 11.4 square miles (30.0 km²), all land.
As of the 2010 Census Rio Grande City had a population of 13,834. The median age was 30. The racial makeup of the population was 92.1% white (4.7% claiming to not be Hispanic or Latino), 0.2% Black, 0.3% Native American, 0.8% Asian, 5.5% from some other race and 1.1% from two or more races. 94.3% of the population was Hispanic or Latino of any race with 88.2% of the population describing themselves as ethnically Mexican.
As of the census of 2000, there were 11,923 people, 3,333 households, and 2,796 families residing in the city. The population density was 1,571.6 people per square mile (606.5/km²). There were 3,846 housing units at an average density of 506.9 per square mile (195.6/km²). The racial makeup of the city was 82.97% White, 0.30% African American, 0.44% Native American, 1.11% Asian, 0.01% Pacific Islander, 12.51% from other races, and 2.67% from two or more races. Hispanic or Latino of any race were 95.89% of the population.
There were 3,333 households out of which 47.0% had children under the age of 18 living with them, 60.1% were married couples living together, 19.8% had a female householder with no husband present, and 16.1% were non-families. 14.6% of all households were made up of individuals and 7.5% had someone living alone who was 65 years of age or older. The average household size was 3.47 and the average family size was 3.86.
In the city, the population was spread out with 33.1% under the age of 18, 11.4% from 18 to 24, 27.4% from 25 to 44, 17.0% from 45 to 64, and 11.2% who were 65 years of age or older. The median age was 29 years. For every 100 females, there were 93.4 males. For every 100 females age 18 and over, there were 88.5 males.
The median income for a household in the city was $19,853, and the median income for a family was $21,363. Males had a median income of $20,245 versus $14,984 for females. The per capita income for the city was $9,684. About 40.4% of families and 44.1% of the population were below the poverty line, including 57.3% of those under age 18 and 33.7% of those age 65 or over.