Regional Municipality of Niagara

The Regional Municipality of Niagara, also colloquially known as the Niagara Region or Region of Niagara, is a regional municipality in southern Ontario, Canada, which occupies most of the Niagara Peninsula. As of 2024, the region had an estimated population of 539,180. St. Catharines is the region's largest city, while the regional seat is located in Thorold.

The Niagara Region is bounded to the north by Lake Ontario and to the south by Lake Erie. The region is bordered in the west by Haldimand County and the City of Hamilton, with its eastern boundary at the Niagara River, which is also the international border with the US state of New York. The Niagara Region is the southernmost part of the Golden Horseshoe, the most populated region of Ontario.

Unique natural landscapes make the Niagara Region an important centre for agriculture and tourism in Canada. The most important agricultural enterprise in Niagara is viticulture, or winemaking. The Niagara Wine Route, which connects visitors to dozens of wineries, is a growing tourism draw while the internationally renowned Niagara Falls is one of Canada's major tourist attractions. Along with Shaw Festival, held annually in Niagara-on-the-Lake, and the Welland Canal, the Regional Municipality of Niagara receives up to 12 million visitors each year. The Niagara Region has been populated by First Nations such as the Neutral, the Haudenosaunee, and the Anishinaabe, including the Mississaugas of the Credit First Nation.

As a census division in the 2021 Census of Population conducted by Statistics Canada, the Regional Municipality of Niagara had a population of 477,941 living in 195,914 of its 207,926 total private dwellings, a change of 6.7% from its 2016 population of 447,888. With a land area of 1,852.82 km² (715.38 sq mi), it had a population density of 258.0/km² (668.1/sq mi) in 2021.

Religious profile (2021):

The area has a higher concentration of human trafficking compared to other regions in Canada, with 3% of recorded incidents taking place within it. The Niagara Region's proximity to the border and large amounts of hotels are considered to be contributing factors to this issue.

Niagara Region contains three airports used primarily for general aviation:

Aside from scheduled commuter flights between Niagara District Airport and Toronto City with FlyGTA, for commercial flights Niagara residents use Toronto Pearson International Airport, Billy Bishop Toronto City Airport, or John C. Munro Hamilton International Airport in the Greater Toronto and Hamilton Area; as well as crossing the border to use Buffalo Niagara International Airport or Niagara Falls International Airport in Upstate New York.