It doesn't seem to address per capita income relative to cost of living. I don't think astronomical income differences are a great thing, but if the COL-adjust

It doesn't seem to address per capita income relative to cost of living. I don't think astronomical income differences are a great thing, but if the COL-adjusted income is higher among, say, the bottom 25% in a city than in a suburban or rural area, that would be an important factor to take into account. Even more so if COL-adjusted income is lower since that would mean the poor are getting less than nothing. Just looking at the income gap doesn't really tell the story though.