Representatives for Carter's family confirmed the singer's death on Saturday. They did not provide any immediate further comment.
Carter, the younger brother of Nick Carter of the Backstreet Boys, performed as an opening act for Britney Spears as well as his brother's boy band, and appeared on the family's reality series House of Carters that aired on E! Entertainment Television.
Deputies responded around 11am following reports of a medical emergency at the home in Lancaster, said Deputy Alejandra Parra with the Los Angeles County Sheriff's Department.
Parra said the deputies found a deceased person at the residence, but she could not immediately confirm it was Carter.
Carter's fifth and final studio album, LOVE, was released in 2018.
He was successful as a child in the late 1990s with hits like Crush On You and Aaron's Party. Since then he has repeatedly attempted a comeback without success.
The former teen star made negative headlines recently. The two brothers Nick and Aaron quarrelled publicly - and traded allegations. In 2019, Nick claimed that his younger brother made threats against the family.
He was also at odds with his twin sister Angel. Nick and Angel Carter eventually each applied for and were granted a restraining order.
Aaron Carter also positioned himself politically and declared in 2016 that he would vote for Donald Trump.
Almost a year ago, the former child star separated from his fiancée Melanie Martin a week after the birth of his first child.
- with PA