The Vegas newspapers did mention this continued growth, but looking at vacancy signs all over town, I wonder if people might be elsewhere and retaining their Nevada ID. I think the population numbers are based on DMV stats. Re-registering a car can be a hassle, and often it must be re-financed, Nevada has higher unemployment benefits than many neighboring states and of course no State income tax. Plus, if someone is a homowner, an out of state address would mean they lose their owner occupied exemption.