From other places where this holds, it only refers to the district of the origin...

coldtea on Oct 26, 2016 | parent | context | favorite | on: Live Free or Die: The Origins of the Geek License ...

From other places where this holds, it only refers to the district of the original purchase. And people don't move that much either, so 90% of the plates or such are accurate as to their owner's district too.