Atiba is married to Tiffany Friesen and they have three adult children, Jacob, Keisha, and Keenan, and eight grandchildren. He attended Brown University and graduated with a B.A. degree in Economics and Urban Studies, including a semester at the University of Lagos, Nigeria. He is also an alumnus of the Education Policy Fellowship Program managed by the Georgia Partnership for Excellence in Education. Atiba serves on the Board of Directors of Park Pride and Community Farmers Markets. He dedicates much of his civic time to the BRAG Dream Team, a statewide youth cycling program in Georgia.