If a Multi-State Plan is offered in a Particular State, will it be available everywhere in the State or might it be available in only certain parts of the State?

It depends.  While OPM is encouraging statewide coverage in the Multi-State Plan (MSP) Program, it is not required of MSP insurers at this time.  OPM is, however, requiring MSP insurers that offer partial coverage in a State to submit a plan for extending coverage throughout the State.