First - Greetings fellow DHer! Much to be said, and I'll try to double back this evening (as one does with thegradcafe).
What I would note is that while there are some obvious DH centers in the US, Canada in general is very strong in digital humanities and because of government humanities grants and some new private funding, it will likely only get stronger. We also have a really good community up here as well and are in regular contact about collaborative projects. If you want to see some of that in action and meet people, highly recommend you check out the Canadian Society of DH conference in Ottawa this June, and of course DHSI in Victoria afterward.