In 1904, Collinsville Academy was built. The school had two stories, six rooms, and could accommodate about 400 students. The school was rebuilt in 1941 with Roosevelt's New Deal to help the citizens of Collinsville retain jobs during the Depression, according to the older citizens of the community. A 20-room school was built to replace it, and continues to be used as an elementary school. A high school and junior high were built in 1995.
Geography
Collinsville is located in southwestern Grayson County at . US 377 passes through the west side of the town, leading north to Whitesboro and south to Pilot Point. Sherman, the Grayson County seat, is to the northeast. According to the United States Census Bureau, Collinsville has a total area of, all of it land.
Demographics
As of the census of 2000, there were 1,235 people, 469 households, and 346 families residing in the town. The population density was 1,720.6 people per square mile. There were 507 housing units at an average density of 706.3 per square mile. The racial makeup of the town was 93.60% White, 0.32% African American, 0.40% Native American, 4.37% from other races, and 1.30% from two or more races. Hispanic or Latino of any race were 5.59% of the population. 59.9% were married couplesliving together, 10.2% had a female householder with no husband present, and 26.2% were non-families. 23.9% of all households were made up of individuals, and 13.9% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.03. In the town, the population was spread out, with 26.8% under the age of 18, 7.4% from 18 to 24, 27.7% from 25 to 44, 20.5% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 93.6 males. For every 100 females age 18 and over, there were 87.6 males. The median income for a household in the town was $32,833, and the median income for a family was $41,000. Males had a median income of $27,763 versus $22,232 for females. The per capita income for the town was $15,123. About 8.1% of families and 10.2% of the population were below the poverty line, including 13.9% of those under age 18 and 10.4% of those age 65 or over.