Without any more lead-in, here is the chart.
The states are alphabetical starting at 12 o'clock and going clockwise, and we see California leads the way with Georgia in second place narrowly beating out Texas. The top-10 is rounded out with North Carolina, Colorado, Florida, South Carolina, New York, Virginia, and Ohio.
My state, Washington, is #11 followed by Pennsylvania, Alabama, Louisiana, and Michigan.
I based these counts on the number of players that had a year-end rating for 2014.