Newmarket

Newmarket (2021 population: 87,942^[4]) is a town and regional seat of the Regional Municipality of York in the Canadian province of Ontario. It is part of Greater Toronto in the Golden Horseshoe region of Southern Ontario. The name stems from the fact that the settlement was a "New Market",^[5] in contrast to York as the Old Market.

The town was formed as one of many farming communities in the area, but also developed an industrial centre on the Northern Railway of Canada's mainline, which was built in 1853 through what would become the downtown area.^[6] It also became a thriving market town with the arrival of the Metropolitan Street Railway in 1899.^[7] Over time, the town developed into a primarily residential area, and the expansion of Ontario Highway 400 to the west and the construction of Ontario Highway 404 to the east increasingly turned it into a bedroom town since the 1980s. The province's Official Plan includes growth in the business services and knowledge industries, as well as in the administrative, manufacturing and retail sectors.

Landmarks include Upper Canada Mall, Southlake Regional Health Centre, the Main Street Heritage Conservation District, and Wesley Brooks Conservation Area (locally called "Fairy Lake Park" or "Fairy Lake").^[8]

^{Newmarket's location on the Holland River enabled travel between Lake Ontario and Lake Simcoe. A portage route, the Toronto Carrying-Place Trail, ran one of its two routes up the Holland River through the Newmarket area, and over the Oak Ridges Moraine to the Rouge River and into Lake Ontario. A more widely used route ran up the western branch of the Holland River, over the moraine, and down the Humber River. In 1793, John Graves Simcoe travelled the trail northward along the main route to the west, and south to York (now Toronto) along the lesser used eastern route through Newmarket. Selecting the eastern route as the better of the two, Simcoe started construction of Yonge Street along the former trail in late 1795, starting in York in Toronto Bay, and ending at the newly named St. Albans (Holland Landing), north of Newmarket.}

Newmarket's geographical coordinates are 44.05°N, 79.46°W, and its elevation above sea level is 252 m.^[28] It has an area of 38.33 km². The town is bounded on the south by Aurora, on the west by King, on the north by East Gwillimbury and on the east by Whitchurch–Stouffville.

The main river in Newmarket is the East Holland River (known locally simply as "The Holland River"), and all other streams in the town are tributaries thereto. These include Bogart Creek, a brook that weaves its way into the town from the Oak Ridges Moraine by way of Bogarttown, emptying into the Holland River in north-central Newmarket; Western creek, another brook rising just west of the town, and reaching the Holland River in the town's north end; Tannery Creek, a stream that joins the Holland River in south Newmarket after flowing through Aurora; and a number of other small watercourses.

There are two reservoirs in Newmarket; Fairy Lake (which is managed by the Lake Simcoe Region Conservation Authority), a favourite recreational area in the centre of town, is a former mill pond on the East Holland River; and Bogart Pond, also a former mill pond, is fed and drained by Bogart Creek in Bogarttown. Furthermore, the water level in the reach of the East Holland north of Davis Drive is controlled from an unfinished Newmarket Canal lock, now used as a weir.

Newmarket also lies south of and above the Algonquin Shoreline, where elevations suddenly drop off from the gently rolling hills that characterize much of Newmarket to the much flatter, lower land down below in the Holland Marsh.

The land is characterized mainly by glacial deposits from the last ice age, known as "Newmarket Till". The town is underlain mainly by sand and gravel, ground by the icesheets that covered the area until about 10,000 years ago. No outcrops are to be found anywhere in Newmarket, so deep are the glacial deposits.