Caledonia is a small riverside community and former town located on the Grand River in Haldimand County, Ontario, Canada. It had a 2011 population of 9,999. Caledonia is within Ward 3 of Haldimand County. The Councillor elected for Ward 3 is Craig Grice. As of September 2006, there are approximately 4,000 households in the community of Caledonia.Caledonia is located at the intersection of Highway 6 and Haldimand Highway 54 (within the town, these streets are called Argyle Street and Caithness Street respectively) on the Grand River. On Highway 6, the town is 10 km south of Hamilton and 10 km north of Hagersville. On Haldimand Highway 54, the town is 15 km east of Brantford, Ontario and 10 km west of Cayuga, Ontario.HistoryCaledonia was once a small strip of land between Seneca and Oneida villages. The Grand River traveled through Caledonia dividing it into two sides, North and South. In 1834, Ranald McKinnon was hired by the Grand River Navigation company to build a dam in Seneca and a dam in Caledonia. Completed in 1840, the dams made water power available. Mills sprung up all over Seneca village, and five mills were built in Caledonia by 1850. One renamed Caledonia Mill is preserved but closed to visitors.The Hamilton to Port Dover Plank Road was brought through Caledonia in 1838. A bridge was built across the river in Caledonia and Seneca in 1842. These wooden bridges lasted around 19 years before they were swept away by the ice on the river. The Seneca bridge was never rebuilt. As of 2011, the Grand River Bridge built in 1927 serves Caledonia's traffic.