What's the right way to get frequently used data in a MVVM pattern.

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MVVM

I'm writing an app (using a MVVM architecture) in which I have to collect customer's registration data. Part of that data is customer's address. I have a web service on our server which returns a list of US states and I'm expected to use this service. As I understand, MVVM requires (strongly encourages) 1-to-1 mapping of Model-ModelView-View. Additionally, I foresee having to obtain a list of states for another form in the same app. So the question is: what's the right way to implement this in MVVM?

What I have tried:

So far, I can't think of a way that would not violate the 1-to-1 rule. A high level example is appreciated.