Leander was established in 1882 on land sold by the Austin and Northwestern Railroad Co. to prospective citizens.[8] The town was named in honor of Leander "Catfish" Brown, one of the railroad officials responsible for the completion of the line.[8][9]
Tumlinson Fort, the first white settlement in Williamson County, was established in early January 1836 at the headwaters of Brushy Creek, four miles south of present-day Leander. With the purpose of protecting white settlers from attacks by ComancheIndians, a company of Texas Rangers occupied the post until late February, when the invasion of Santa Anna made it necessary for the post to be abandoned, soon after which it was burned by the Comanche.[10]
The Webster Massacre occurred near present-day Leander in August 1839, when a party of about 30 settlers traveling westward through the area were attacked by Comanche Indians and all but three were killed.[11]
It was near Leander that the Leanderthal Lady, a skeleton dating back 10,000 to 13,000 years, was discovered; the site was one of the earliest intact burials found in the United States.[12]
In August and September 2011, destructive wildfires swept through two central Leander neighborhoods, burning a total of 330 acres (130 ha) and destroying 26 homes.
As of the 2020 United States census, there were 59,202 people, 18,505 households, and 15,118 families residing in the city. The population density was 1,016.2 inhabitants per square mile (392.4/km2). There were 2,612 housing units at an average density of 349.4 units per square mile (134.9 units/km2). 51.7% of households had children under the age of 18 living with them, 65.5% were married couples living together, 10.5% had a female householder with no husband present, and 19.0% were non-families. 14.8% of all households were made up of individuals, and 3.6% had someone living alone who was 65 years of age or older. The average household size was 3.01 and the average family size was 3.33.
In the city, the population was spread out, with 33.5% under the age of 18, 7.6% from 18 to 24, 38.6% from 25 to 44, 15.7% from 45 to 64, and 4.6% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 102.3 males. For every 100 females age 18 and over, there were 96.0 males.
As of 2019, median household income (in 2019 dollars) from 2015 to 2019 was $101,872. Per capita income in first 12 months of 2021 (in 2019 dollars), 2015–2019 was $36,893, and persons in poverty, was 4.2%.[17]
Education
Leander is the center of the Leander Independent School District. Schools in the district include Leander High School, Vista Ridge High School, Cedar Park High School, Charles Rouse High School, Vandegrift High School, Tom Glenn High School, Wiley Middle School (Bernice Knox Wiley Middle School), Leander Middle School, Danielson Middle School, Henry Middle School, Running Brushy Middle School, Cedar Park Middle School, Canyon Ridge Middle school, Parkside Elementary School, Pleasant Hill Elementary School, Rutledge Elementary School, Whitestone Elementary School, Jim Plain Elementary School, and Block House Creek Elementary School, Winkley Elementary School, Reed Elementary School, Camacho Elementary (S.T.E.M.) school, Bagdad Elementary School and Monta Akin Elementary School.
^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.[16]