529 Plan and College Savings

I have a two year old boy, and I want to open a savings account for his college savings, and I have seen some good things about these 529 plans. I know each different state has a different kind of plan too, but the money can still be used in other states according to what I’ve read.

My question is can my son still use these savings, even if we moved out of the United States? My husband is from Canada, and my family lives much closer to him there in Michigan (currently we live in California) — we would like to move to Canada (near Ottawa) and be close to our family, but I don’t know if it will mess up my son’s chances of using that money for college? Thanks!

(Didn’t know which category this should be under, but I thought other parents might be able to help me!)