PDF version of the Collie-Preston electorate map 
Area (sq km): 4,164
Number of Electors: 31,740
Source:
2023 Final Distribution Report, Western Australian Electoral Distribution Commission.Origin of the Name:
The townsite of Collie is located in Western Australia's south west agricultural region, 202 kilometres south south east of Perth, and about 50 kilometres east of Bunbury. It is situated on the Collie River, after which it is named. The river, which rises in the Darling Range and flows into Leschenault Estuary near Bunbury, is named after Dr Alexander Collie. Dr Collie, a Royal Navy surgeon, and Lt. William Preston of HMS Sulphur, explored this country and discovered the river in 1829. Captain James Stirling, the lieutenant governor, named it in Collie's honour. Collie was appointed the first resident magistrate at Albany in 1831 and was later appointed colonial surgeon. He died in Albany in 1836.
The townsite of Preston is located in the south west agricultural region, 228 km south of Perth and 18 km from Donnybrook in the Preston River Valley. It derives its name from the river on which it is located, which was named in honour of Lieutenant William Preston RN, its discoverer, along with Dr Alexander Collie in November 1829.
Source: Western Australia. Department of Land Administration. Names and Places.
Suburbs and Towns within the Electorate:
The electorate of Collie includes all or part of Allanson, Argyle, Australind, Balingup, Beelerup, Boyanup, Brazier, Brookhampton, Buckingham, Burekup, Capel, Cardiff, Collie, Collie Burn, Crooked Brook, Cundinup, Dardanup, Dardanup West, Donnybrook, Eaton, Elgin, Ferguson, Gelorup, Glen Mervyn, Gwindinup, Harris River, Henty, Kirup, Lowden, Lyalls Mill, Millbridge, Muja, Mullalyup, Mungalup, Newlands, Noggerup, North Boyanup, Palmer, Paradise, Paynedale, Picton East, Preston Settlement, Queenwood, Southampton, Stratham, The Plains, Thomson Brook, Upper Capel, Waterloo, Wellington Forest, Wellington Mill, Wilga West, Worsley, Yabberup and Yourdamung Lake.
Source: Western Australian Electoral Commission.