According to the United States Census Bureau, Alton has a total area of 7.31 square miles (18.94 km2), of which 0.003 square miles (0.008 km2), or 0.04%, are water.[2]
As of the 2020 United States census, there were 18,198 people, 4,566 households, and 3,959 families residing in the city.
2000 census
As of the census[4] of 2000, there were 4,384 people, 1,059 households, and 988 families residing in the city. The population density was 2,075.5 inhabitants per square mile (801.4/km2). There were 1,175 housing units at an average density of 556.3 per square mile (214.8/km2). The racial makeup of the city was 79.33% White, 0.05% African American, 0.32% Native American, 19.02% from other races, and 1.28% from two or more races. Hispanic or Latino of any race were 97.90% of the population.
There were 1,059 households, out of which 58.0% had children under the age of 18 living with them, 70.7% were married couples living together, 17.8% had a female householder with no husband present, and 6.7% were non-families. 6.2% of all households were made up of individuals, and 3.8% had someone living alone who was 65 years of age or older. The average household size was 4.14 and the average family size was 4.29.
In the city, the population was spread out, with 37.9% under the age of 18, 12.1% from 18 to 24, 28.7% from 25 to 44, 14.7% from 45 to 64, and 6.6% who were 65 years of age or older. The median age was 25 years. For every 100 females, there were 94.8 males. For every 100 females age 18 and over, there were 88.0 males.
The median income for a household in the city was $22,097, and the median income for a family was $23,563. Males had a median income of $18,487 versus $15,341 for females. The per capita income for the city was $6,230. About 38.7% of families and 42.7% of the population were below the poverty line, including 51.9% of those under age 18 and 39.3% of those age 65 or over.
Much of Alton was in the Alton Independent School District until January 27, 1975, when that district merged into Mission CISD.[15]
In 2018 city manager Jorge Arcaute stated that some families moved to Alton specifically to put their children in the Mission CISD and Sharyland ISD schools.[16]
Salinas Elementary School – annexed into the City of McAllen
Mission CISD operates Alton Memorial Junior High School, named in honor of the Mission CISD students who died in the 1989 bus crash, in Alton.[7] Students zoned to Cantu, Cavazos, and Waitz elementaries are zoned to Alton Memorial, while those zoned to Alton Elementary, Midkiff, and Salinas are zoned to Rafael A. Cantu Junior High School in Palmhurst. Sections of Alton are zoned to Mission High School and Veterans Memorial High School in Mission.[19]
There is a Mission CISD alternative high school: Mission Collegiate High School, in Alton.[22] Sharyland ISD operates Jesse Jensen Elementary School in Alton.[14] Sharyland ISD sections of Alton are zoned to Jensen, North Junior High School in McAllen, and Sharyland Pioneer High School in unincorporated Hidalgo County.[23]
La Joya ISD operates Domingo Treviño Middle School in Alton.[14][18] The sections of Alton in La Joya ISD are divided between:
Diaz/Villareal Elementary School and Kika de la Garza Elementary School[24]
Josefa Garcia Park is in Alton. It previously had 5 acres (2.0 ha) of land. In 2018 Texas Parks and Wildlife Department (TPWD) gave a $500,000 grant to increase the park's size to 55 acres (22 ha). The park includes a memorial to the 1989 bus accident, with 21 crosses, one per deceased victim, and a statue of Jesus Christ.[27]
^ ab"Proposed Zoning Map 2017Archived August 2, 2018, at the Wayback Machine." City of Alton. Retrieved on August 2, 2018. This map shows the city boundaries and which schools are in the city limits.
^ ab"Mission CISD School Zones." Mission Consolidated Independent School District. Retrieved on August 2, 2018. See HTML version. Junior high boundaries are determined by the elementary school zoning, with some optional exceptions, while high school boundaries are described by text.
^"School History." Arturo Cantu Elementary School. Retrieved on August 4, 2018.
^Home. Raquel Cavazos Elementary School. Retrieved on August 2, 2018.
^Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.[12]