Simpson was born in Gold Coast, Queensland, Australia, to Brad and Angie Simpson. He has two younger siblings, Tom and Alli. He is also a talented swimmer, winning two gold medals at the Queensland Swimming Championships. Simpson trained at the Miami Swimming Club under coach Ken Nixon. Simpson's mother Angie worked as a volunteer at the club.
2009–2011: Career beginnings, 4 U, and Coast to Coast
At Nevada Wild Fest outside the Rio in Las Vegas, Nevada 25 October 2012.
Simpson's rise to recognition was featured on The 7.30 Report in December 2009. He released his debut single, "iYiYi" (which features American rapper Flo Rida), on 15 May 2010. The music video for Simpson's second single, "Summertime", was released on 20 September 2010. Simpson relocated to Los Angeles in June 2010 with his family to record his songs with Atlantic Records and his producer Shawn Campbell. That same month, Simpson appeared on Sunrise. On 22 June 2010, it was announced that Simpson would participate in the Camplified 2010 Tour, along with other artists, touring across the United States. The tour began on 5 July 2010 and ended on 14 August 2010. Other tours that year included a middle school tour that took place from October–November 2010 and covered 9 U.S states. An EP, 4 U was released on 21 December 2010. The EP included five tracks in total, four of them being previously unreleased. Simpson recorded a remake of the song "I Want Candy" by The Strangeloves as the main theme song for the Easter-themed live-action/CGI-animated film Hop. In May 2011, Simpson was "egged" during a live performance at Miranda Fair in Sydney. Simpson told Australian radio show The Kyle & Jackie O Show that he was not in fact hit by the eggs, and that he was upset on behalf of his fans because the remainder of his show was cancelled because of security concerns.
On 12 June 2012, Simpson released an EP titled "Preview to Paradise" containing four songs from his upcoming debut studio album, Paradise, due to be released 2 October 2012. In February 2013, Cody toured Europe, doing his own tour dates as well as supporting Justin Bieber on many of the European Believe tour dates. Surfers Paradise is Cody's first album to debut in the Top 10 of Billboard Hot 200. During summer of 2013, Cody headlined the Paradise Tour, featuring opening acts Ryan Beatty and Before You Exit.