Okoro was born Jan. 26, 2001 in Atlanta, Georgia to Nigerian parents, Godwin and Gloria Okoro. Isaac was raised close to downtown Atlanta. He has three siblings: Michael, Rachel and Ashley. Okoro began playing basketball in his local church league. While around seven years old, he was trained by AAU coach Omar Cooper. Okoro played high school ball at McEachern High School in Powder Springs, Georgia, and graduated with honors. As a sophomore, he led the team to the regional championship while averaging 22.5 points per game. Later, as a senior, he averaged 19.7 points, 10.6 rebounds, 3.2 assists and 2.7 steals per game and led McEachern to titles at the City of Palms Classic and the Tournament of Champions. The team finished 32-0. Okoro had his jersey retired by the school in 2019. At college, he went to Auburn, where he studied business and was named Second Team All-SEC as a freshman. After his freshman season, he declared himself eligible for the 2020 NBA Draft. Fans can follow the forward on Twitter @isaacokoro303.