Differences in state income tax rates

I was just looking around the internet tonight, and it is pretty astounding how large the difference in state income tax rates are. Florida and Texas have no income tax rates. California's top rate hits 10.55%. Hawaii's and Oregon's hits 11% at an incomes of $200,000 and $250,000 respectively. For the state of New York, the top rate hits 7.85 percent unless you live in NYC where you have to add on the additional city taxes.