Regional Municipality of Waterloo

Waterloo Region
Regional Municipality of Waterloo
Clockwise: Kitchener City Hall, Waterloo Regional Headquarters, Grand River scene in Cambridge, aerial view of St. Jacobs, University of Waterloo Nano Centre
Motto(s): 
"Peace, Prosperity!"
Regional Municipality of Waterloo (Regional Municipality of Waterloo)
Location of Waterloo Region in Ontario
Coordinates: 43°29′35″N 80°30′04″W / 43.49306°N 80.50111°W / 43.49306; -80.50111 (Kitchener - Cambridge – Waterloo (Regional Municipality of Waterloo))
CountryCanada
ProvinceOntario
SeatKitchener
Government
  Regional ChairKaren Redman
  Governing BodyWaterloo Regional Council
  MPs
  MPPs
Area
  Land1,370.07 km2 (528.99 sq mi)
Population
 (2021)
  Total
587,165
  Density428.6/km2 (1,110/sq mi)
GDP
  Tri-Cities CMACA$37.1 billion (2021)
Time zoneUTC−5 (EST)
  Summer (DST)UTC−4 (EDT)
Area code(s)519, 226, 548
Websiteregion.waterloo.on.ca

The Regional Municipality of Waterloo (Waterloo Region or Region of Waterloo) is a metropolitan area of Southern Ontario, Canada. It contains the cities of Cambridge, Kitchener and Waterloo (KWC or Tri-Cities), and the townships of North Dumfries, Wellesley, Wilmot and Woolwich. Kitchener, the largest city, is the seat of government.

The region is 1,370 square kilometres (530 sq mi) in area, with a population of 587,165 as of the 2021 Canada census, though an end of 2023 estimate puts the population above 673,910 people. Waterloo Region forms the tenth-largest metropolitan area in Canada, with recent population growth almost entirely fuelled by international students. In 2016, the Kitchener-Waterloo-Cambridge area was rated Canada's third-best area to find full-time employment.

The region was formerly called Waterloo County, created in 1853 and dissolved in 1973. The county consisted of five townships: North Dumfries, Waterloo, Wellesley, Wilmot, and Woolwich.