Our friends at Wikipedia describe it this way:
Ralston is a city in Douglas County, Nebraska, United States. The population was 6,494 at the 2020 census. Ralston is surrounded on three sides by the city of Omaha by 84th, 72nd, and L Streets, and by Sarpy County (Harrison Street) on the south side.
The area of the townsite was established on May 23, 1907 with the sale of 282.7 acres of land owned by Omaha newspaper editor George L Miller to the Ralston Investment Company. A year later the town was platted by future Omaha mayor Roy N. Towl. A petition to incorporate the property as a village was submitted to the Douglas County Board of Commissions on June 22, 1912, which was adopted by the Board two days later on June 24.
The local school district is Ralston Public Schools. Ralston High School opened on Lakeview Drive in 1954; it is now at 8969 Park Drive. The old high school building was converted to the middle school. In 2006, Ralston High School’s enrollment jumped from 850 students to 1090 students.