I have just looked at the listings provided by Coalition in Support of Ecclesia Dei for
usus antiquior Masses in North America. The Coalition in Support of Ecclesia Dei is a sort of federation representing numerous (usually state based) societies campaigning for Latin Masses in North America. It covers both the USA and Canada. I found 416 Masses listed that took place every Sunday at a regular time. As this side of the Atlantic, there are many more Sunday Masses that take place on a limited number of Sundays (eg 1st and 3rd of the month). I prefer to discount these as unsatisfactory provision.
The provision works out at just over two per diocese which is similar to England and Wales, but the variation between dioceses is much greater than it is here. In the US, there are several dioceses with no Latin Masses at all on Sundays, whilst New York has the best provision with 12. It is noticeable that provision in Canada is much less than in the US.
Of course, there may be omissions in the Ecclesia Dei listings. They have a much more difficult task collecting the information from 185 dioceses than the Latin Mass Society has from 22 in England and Wales.