Per Capita Income data of states in the USA
BEA Person Income per capita for USA or states
https://apps.bea.gov/iTable/iTable.cfm?acrdn=5&amp;isuri=1&amp;reqid=70&amp;step=1
St Louis FED can pull up this data for you.
https://fred.stlouisfed.org/series/A792RC0A052NBEA

For your second question, it really depends on how you define personal income.  A recommendation is to check the statistical agencies definition of personal income and see if it matches up with your analysis/ project.