The Canadian Shield is located in North America, covering a large portion of Canada and extending into parts of the United States.

Here's a more specific breakdown:

* Canada: The majority of the Canadian Shield lies within Canada, encompassing most of Ontario, Quebec, Manitoba, Saskatchewan, and parts of Nunavut, Newfoundland and Labrador, and the Northwest Territories.

* United States: A small portion of the shield extends into the northern parts of Minnesota, Wisconsin, and Michigan.