On 12 January 2019, Castro launched his campaign for the Democratic nomination for President of the United States in 2020 in San Antonio. Castro was born in San Antonio, Texas, the son of Maria "Rosie" Castro and Jessie Guzman. Castro is of Mexican descent. Julian Castro was born on 16th September 1974 in San Antonio, Texas, US. When was Julian Castro born? It came shortly after the network interviewed Joaquin Castro, a Democratic congressman representing Texas, about the next steps in the House impeachment inquiry .

The news came out in January 2019 after his twin brother, Joaquin Castro made the announcement. Castro is the son of Jesse Guzman and Rosie Castro and the identical twin brother of Julián Castro, the former Mayor of San Antonio and the 16th United States Secretary of Housing and Urban Development in the Cabinet of President Barack Obama; Joaquin is one minute younger than Julián, being born at 2:41AM and 2:40AM respectively.

During a CNN town hall, Democratic presidential candidate Julián Castro jokes about his twin brother, Joaquin Castro's (D-TX), 'plummeting' approval ratings.

His birth name is Julián Castro. A misidentified tweet led to double trouble for MSNBC on Friday thanks to twin politicians Joaquin and Julián Castro. He is the twin brother of Congressman Joaquin Castro. Presidential candidate Julian Castro is often mistaken for his identical twin brother, Joaquin, but now there’s a whisker of a difference between the two.

It looked like Julián Castro and sounded a lot like him, but confirmation that he plans to run for president in 2020 came from his identical twin, Joaquín Castro.
WASHINGTON — Rosie Castro, mother of fast-track Texas Democrats Julián and Joaquin Castro, saw the bond between her identical twins as she listened to their baby chatter.

Castro was mentioned as a possible running mate for Hillary Clinton during the 2016 presidential campaign. Castro is highly supported by the popular politician, Hilary Clinton in the 2020 election. He is the identical twin brother of current United States Representative Joaquin Castro; Julián is one minute older than Joaquin: they were born at 2:40 and 2:41 am, respectively.