Caroline Carter was born in 1979 to Peter Carter and Cleo Carter (née Mews) in a poor American community. She was the sister of Deb Collingsbury (born Deb Carter) who perished in a fire in 2012. Carol went to a secondary school in her town where she met Mike Cropper. The two were frosty with each other at first, but several months later, Mike confessed his love to Carol and in 1999, the two got married.
Carol and Mike weren't the best parents. They neglected Christopher for weeks and didn't feed him in right amounts, causing him to be the person he is today.
After Carol's siter, Deb and her family died in a fire, Deb's daughter, Dette required a place to stay. Carol invited her into her home, giving her a home until she began university.