I am in rural West Virginia and the salaries are nothing like the above.
Keep in mind there's a drastic difference in cost of living between CA, HI, MA, NJ, etc. Not only are taxes much higher, but car insurance, gas, homes, electricity, food, etc. cost significantly more than in SD, WV, WI, etc. Coastal states are always more expensive. You may not earn what these nurses earn, but you may very well have a higher standard of living.
NJ has been hemorraging residents due to the high cost of living. I knowa former NJ resident who moved to GA and took a $30k pay cut, but with the lower cost of living, actually has more money now with the smaller salary. GA is much cheaper!