Checking the Canadian census for 2006 it shows a total of 6014 people speaking "a Gaelic language" which is more than the previous figure I'd found. But the point remains it is a tiny fraction of the speakers in Scotland and it is the figure for both Scottish Gaelic and Irish. The same census shows about 22,000 Irish immigrants in Canada at that moment so we can reasonably presume that a fair percentage of the 6014 speakers of a Gaelic language come from this immigrant group.

You often read things on the net (not that it has been suggested in this discussion)suggesting there are more Gaelic speakers in Canada than in Scotland. In short it is a myth.