Other than Minnesota, the only other state that has a similar ambulance PSA law is Connecticut.
In fact, Minnesota and Connecticut are the only two states that explicitly require a state regulatory authority to establish service areas and assign a single ambulance service provider to each one. Connecticut’s system is also significantly more robust than Minnesota’s system, as Connecticut affords to local communities and regional EMS entities a mechanism through which they can petition the state agency tasked with allocating EMS service areas to revoke an ambulance service provider’s service area assignment when necessary to protect public health and safety.
Source: Improving Emergency Medical Services in Minnesota: A Legal Analysis of Minnesota's EMS Statutes and Regulations