Jarrell, along with E. C. Haeber and B. N. Dover, the town was settled at the intersection of an old stagecoach road and the Bartlett Western Railroad that was under construction.

[8][9] The climate in the area is characterized by hot, humid summers and generally mild to cool winters.

The hardest-hit area was the Double Creek Estates subdivision, which was completely obliterated, with all of the homes in the neighborhood being destroyed.

As of the 2020 United States census, there were 1,753 people, 417 households, and 365 families residing in the city.

[21] The district's middle school was built in 2014, but underwent an expansion in 2018–2019 to gain more classroom and science labs so that it could better accommodate the growing population of students.

[24][25] Emergency services are provided by the Jarrell Fire Department, operating under Williamson County ESD#5.

[9] In 2014, Chief Andres Gutierrez was sentenced to 54 months in federal prison and three years of supervised release after pleading guilty to a wire fraud/theft of honest services charge.