Dunno but that never prevented me from expressing an opinion.

To make a guess, per capita is total income reported on State income tax returns divided by population. While earnings per person is average annual wage paid to employed people. Or something like that. It's probably explained in the footnotes to those charts. Gross income in the state is distorted by the huge incomes made by the mega-rich. (from post#1 in this thread "four of the world's 10 largest companies are headquartered in California, including tech heavyweights Alphabet Inc. (NASDAQ: GOOGL) and Facebook Inc. (NASDAQ: FB). " This concentration of new tech wealth got us in trouble 15 years ago. The legislature allocated all the new dot-com tax revenue to permanent programs then the dot-com bubble burst and the new dedicated expenditures couldn't be downsized fast enough to avoid budget shortfalls. Governor Jerry Brown may seem like a nut, he's rightfully earned that reputation, but he really does understand state budgeting. After he took office, Brown got everything back to running smoothly and the state budget has finally left that crisis era behind. The overall picture is that the state's economy is growing faster than the nation as a whole, in fact you could say that California is pulling up the numbers for the national economy because this performance is such a large component of the national economy. Added - The fishpond model above isn't applicable to economics. As people mine, farm, manufacture, sell stuff to one another, write computer programs or whole new computer cultures (Facebook etc) new wealth is created and the economy grows. In terms of that fishpond, the dimensions of the pond are increasing.