The first survey of Thorold, or Township 9 as it was known then, occurred in 1788. The earliest communities in what is now Thorold emerged at Beaverdams, DeCew Falls and
St. Johns. In 1846, the community had a population of about 1,000 and there were three churches or chapels and a post office. Various types of tradesmen worked here. Industry included two grist mills, a cement mill, a brewery and three wagon makers. There were seven taverns. Thorold, located on the brow of the
Niagara Escarpment, soon became dominant and was
incorporated as a
village in 1850. The village experienced population growth as the canal became more developed. In 1875, Thorold became a town. When the
Regional Municipality of Niagara was formed in 1970, the Town of Thorold expanded to include the former Thorold
Township. In 1975, the town became incorporated as the City of Thorold. Thorold is also the location of the
War of 1812 battle site,
Beaverdams, where, on June 25, 1813, Colonel
Charles Boerstler and his
American troops were defeated by the
British regulars and
Caughnawaga Mohawks. The
2021 Canadian census identified Thorold as the eighth-fastest growing municipality in Canada. == Demographics ==