At what age did Liston start boxing.

[Sheldon312]

Cant seem to find an accurate answer

[SN!PER]

The doctor didn't deliver baby Liston, he punched his way out of the womb.

[Sun_Tzu]

Looks like he was 23 when he turned pro anyway.

[Robbie Barrett]

Nobody knows how old Liston was, not even Liston knew how old he was. His birth was never registered.

[Robbie Barrett]

There is no official record of Sonny Liston's birth. He was born on a farm in Arkansas, a state which did not require mandatory birth certificates until 1965. Liston told sportswriter Jerry Izenberg that his date of birth was carved on a tree, but it was chopped down.
When Liston was arrested for robbery in 1950, he gave his age as 22. When he filed for a birth certificate for legal reasons in 1953, he said his date of birth as May 8, 1932. And when he testified before a U.S. Senate subcommittee in 1960, he said he was born in 1933.
Liston's mother said he was born on January 8, 1932. She said the date was recorded in a family Bible, but the Bible was lost somewhere along the way. Sometimes she said the date was January 18. "I know he was born in January," she recalled. "It was cold in January." Liston biographer Nick Tosches found that a sibling’s birth was registered as January 8th and supposed that she mixed them up. Other times she said Sonny was born between 1929 and 1930. She also said she thought he was born in 1927. Boxing writer Springs Toledo believes she confused the year of his birth with the birth year of another sibling, which was 1927. Another time, she said she believed his birthday was July 22.
When the records from the 1930 United States Census were released in 2002—access to personally identifiable information from census records is restricted for 72 years—Liston's name was absent. Ten years later, when the 1940 Census records became available, Charles L. Liston was listed on the Liston family card. His age was listed as 10.
Based on the census information and statements from Liston's mother, Springs Toledo believes Liston may have been born on July 22, 1930.

http://boxrec.com/media/index.php?title=Human:9031

[boliodogs]

From what I found on boxrec his true birthday is unknown. Officially he was born in 1930. He first boxed in prison in 1952. He had some amateur fights in 1953 and turned pro in late 1953 or early 1954.