I wonder if differing states of lockdown could be used for different population densities. Coos County in NH, the nearly empty one that is the top third of the state, has 0 cases of C19. It borders areas of Vermont, Maine, and Quebec that also have no cases. Perhaps churches, restaurants, retail, and bars could open there safely, with appropriate warnings. Cheshire and Sullivan Counties have only two cases each. They border areas of Vermont with somewhat higher concentrations, but still low*. That may be a touch more problematic, as the former also borders Western Massachusetts, and it might encourage a higher-risk population to enter a lower-risk area. Still, it's a pretty good drive from Springfield to Keene.
I have not heard that governments are even considering such arrangements, though I have read a few people on the internet (especially Chicago Boyz) suggesting that different areas of risk should be treated differently. Nothing within two hours of NYC, I wouldn't think. Has anyone seen any discussion of this that goes beyond the simple question-asking and superficial considering I've done here?
*The knuckleheaded first case from NH who was told to self-isolate but went to a party in Vermont attended by lots of people at the Dartmouth business school affected Windsor County. But most of VT's cases are in Burlington, predictably.