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Sudbury, Ontario

Sudbury, officially the City of Greater Sudbury, is a city in northeastern Ontario, Canada.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Sudbury, officially the City of Greater Sudbury, is a city in northeastern Ontario, Canada. It is the largest city in Northern Ontario and is known for its mining history, large land area, and many lakes. The city was formed through amalgamation in 2001 and serves as a regional centre for services, education, and mining.

History

Sudbury developed as a mining and rail centre in the late 19th and 20th centuries. The modern City of Greater Sudbury was formed on January 1, 2001, through the amalgamation of the former City and Regional Municipality of Sudbury with several towns and townships.

Geography

The city lies on the Canadian Shield in northeastern Ontario, near Ramsey Lake and within the Sudbury Basin. It is the largest municipality in Ontario by land area, covering about 3,186 km², and contains 330 lakes, earning it the nickname “City of Lakes.”

Economy

Mining, especially nickel mining, has been central to Sudbury’s development and identity. The city also functions as a regional service centre for northeastern Ontario.

Culture and education

Greater Sudbury is a bilingual community with major post-secondary institutions including Laurentian University, Cambrian College, and Collège Boréal. Cultural attractions include Science North, Dynamic Earth, and the Big Nickel.

Key facts

  • Greater Sudbury is the largest city in Northern Ontario by population.
  • The city was created on January 1, 2001, through amalgamation.
  • Sudbury is widely associated with nickel mining and is an important mining centre.
  • The municipality contains 330 lakes and is the largest in Ontario by land area.
  • The city is home to Science North, Dynamic Earth, Laurentian University, and other institutions.
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Canadian context

Greater Sudbury is one of Northern Ontario’s most important urban centres and a major reference point for Canadian mining history, bilingual communities, and municipal amalgamation in Ontario.

Frequently asked questions

What is Sudbury, Ontario?
Sudbury is a city in northeastern Ontario officially known as the City of Greater Sudbury.
When was Greater Sudbury formed?
The current city was formed on January 1, 2001, through amalgamation.
Why is Sudbury famous?
It is best known for its nickel-mining history and for being a major mining centre in Canada.
How many lakes are in Greater Sudbury?
Greater Sudbury contains 330 lakes and is often called the City of Lakes.
How large is Greater Sudbury?
It covers about 3,186 square kilometres, making it Ontario’s largest municipality by land area.
What was the population in 2021?
The 2021 Canadian Census reported a population of 166,004.

References

  1. City of Greater Sudbury — https://www.greatersudbury.ca/live/about-greater-sudbury/
    Supports: Area, geography, lakes, population, and municipal status.
  2. The Canadian Encyclopedia — https://thecanadianencyclopedia.ca/en/article/sudbury-greater
    Supports: Incorporation, population, location, mining history, and regional role.
  3. Sudbury.com — https://www.sudbury.com/community-information/greater-sudbury-services/facts-268607
    Supports: Amalgamation date and constituent municipalities.
  4. FactSnippet — https://www.factsnippet.com/site/facts-about-sudbury-ontario.html
    Supports: Population and broad historical overview.
  5. Encyclopaedia Britannica — https://www.britannica.com/place/Sudbury-Ontario
    Supports: Location and general geographic description.
  6. Discover Sudbury — https://www.discoversudbury.ca/about/sudbury-fun-facts/
    Supports: Lakes, mining identity, and local attractions.