Richmond is a town in Tasmania about 25 km north-east of Hobart, in the Coal River region, between the Midland Highway and Tasman Highw…Richmond is a town in Tasmania about 25 km north-east of Hobart, in the Coal River region, between the Midland Highway and Tasman Highway. At the 2006 census, Richmond had a population of 880. Richmond's most famous landmark is the Richmond Bridge, built in 1823 to 1825, around the time of the town's first settlement. It is Australia's oldest bridge still in use.