Hilltown is a locality in the District Council of Clare and Gilbert Valleys of South Australia. The former town centre is located on Hilltown Road, …Hilltown is a locality in the District Council of Clare and Gilbert Valleys of South Australia. The former town centre is located on Hilltown Road, which runs north-south between Andrews and Hill River, while the unsealed Harvey Highway connects the former town centre to RM Williams Way. It is about 4 km east of RM Williams Way, on the former Spalding railway line.