Where is Niagara Falls located?

It is located in Canada, and New york.
Niagra Falls is loacted half in Canada half in Buffalo, New York.

Niagara Falls is found on the area that borders Ontario (a Canadian province) and New York (a US state). Niagara Falls is often thought to be one waterfall, but is actually the sum of three seperate falls which are named; Horseshoe, American, and Bridal Veil.