9 U.S states and 1 Canadian province.
Vermont shares borders with the U.S. states of New Hampshire, Massachusetts and New York and the Canadian province of Quebec.
British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, and Quebec are the Canadian Provinces that shares their southern border with USA.
five
Three Canadian provinces share their southern border with the United States from west to east: British Columbia, Alberta, and Saskatchewan. British Columbia is the westernmost province, followed by Alberta and then Saskatchewan. Each province has a border that runs along the US states of Alaska, Montana, and North Dakota, respectively.
One
Likely an error. Michigan is not a province of Canada, though Michigan has many Canadian connections and history.
one province: British Columbia
The distance between the Canadian border and Plattsburgh, NY is approximately 16 miles.
One (Ontario).
It is about 114 miles.
about 10 miles