La Presa is a census-designated place (CDP) in Webb County, Texas, United States. The population was 319 at the 2010 census.
La Presa is located at 27°23′54″N 99°26′53″W / 27.39833°N 99.44806°W / 27.39833; -99.44806 (27.398305, -99.448106).
According to the United States Census Bureau, the CDP has a total area of 0.5 square miles (1.3 km²), of which, 0.5 square miles (1.2 km²) of it is land and 2.04% is water.
As of the census of 2010, there were 319 people, 128 households, and 104 families residing in the CDP. The population density was 1,059.5 people per square mile (408.6/km²). There were 178 housing units at an average density of 371.2/sq mi (143.2/km²). The racial makeup of the CDP was 86.42% White, 0.59% African American, 10.63% from other races, and 2.36% from two or more races. Hispanic or Latino of any race were 95.67% of the population.
There were 128 households out of which 55.5% had children under the age of 18 living with them, 66.4% were married couples living together, 7.8% had a female householder with no husband present, and 18.8% were non-families. 10.2% of all households were made up of individuals and 2.3% had someone living alone who was 65 years of age or older. The average household size was 3.97 and the average family size was 4.25.
In the CDP, the population was spread out with 34.1% under the age of 18, 9.4% from 18 to 24, 33.9% from 25 to 44, 17.5% from 45 to 64, and 5.1% who were 65 years of age or older. The median age was 28 years. For every 100 females, there were 130.9 males. For every 100 females age 18 and over, there were 157.7 males.
The median income for a household in the CDP was $19,861, and the median income for a family was $16,467. Males had a median income of $16,970 versus $12,500 for females. The per capita income for the CDP was $9,665. About 42.4% of families and 37.1% of the population were below the poverty line, including 44.8% of those under age 18 and 100.0% of those age 65 or over.