Yes. There are several people that claim to have hypos in the US but there is only one person that I now of that quite possibly has some. Other than that, none currently exist outside of Oz.
The true hypo coastals appear to be of a co-dom nature.
Hypo, as well as red hypo, are terms that some people used to describe their jags and get a bit more money for them. It was originally coined by the jag "founder". There is no genetic basis for hypomelanism in jags. They only appear hypo.