These boundaries took effect as of the 2018 election. Therefore, residents in the following areas are constituents of the Morialta electoral district:
- Ashton
- Athelstone
- Basket Range
- Castambul
- Cherryville
- Cudlee Creek
- Forest Range
- Gumeracha
- Highbury
- Kenton Valley
- Lenswood
- Lobethal
- Marble Hill
- Montacute
- Mount Torrens
- Norton Summit
- Rostrevor
- Summertown
- Teringie
- Uraidla
- Woodforde