Mount Thomas is located in the state of Victoria in a very rough northern triangle with the real towns of Echuca, Swan Hill and Benalla nearby. In episode 321, Mount Thomas is shown to be located in the fictional Victorian Parliament electoral district of Hetherington along with St Davids and the surrounding district. In episode 56, the population is given on a "Welcome to Mt. Thomas" sign as 7805; in episode 266 a different sign states the population is now 6399, which is likely a continuity error, as the circumstances on the show do not indicate such a significant drop in residents. Nevertheless, the town is large enough for a police force of five officers plus a detective (this grows later), a court house, a railway station and yards, hospital, primary and secondary schools, the obligatory football and cricket clubs and a swimming pool - but still small enough that most members of the community are known to everyone else.