The collared delma is mostly located in the areas of south-east Queensland but they have been recorded within northern New South Wales. Due to its vulnerability, the collared delma's distribution across Queensland is highly fragmented and only found in specific areas of south-east Queensland; these fragmented habitats are extremely restricted. This fragmentation can be divided into two areas based on phylogeographical changes, costal and inland. These areas include the Bunya Mountains, Blackdown Tablelands National Park, Expedition National Park, Western Creek, near Millmerran, and Toowoomba Range. Large concentrations of the collared delma have been reported in Western Brisbane suburbs, which include Kenmore, Pinjarra Hills, Anstead, Mt Crosby, Lake Manchester, and Karana Downs.
