Is the 36-year-old mayor of San Antonio, making him the youngest mayor of a Top 50 American city. In 2001, at the age of 26, Mayor Castro became the youngest elected city councilman in San Antonio history. Throughout his tenure in public service, he has championed a vision of economic growth and a top-notch quality of life for all San Antonians. In 2005, Castro founded the Law Offices of Julián Castro, PLLC, a civil litigation practice. He earned his undergraduate degree from Stanford University with honors and distinction in 1996 and a juris doctorate from Harvard Law School in 2000.