Although this study is interesting in that it compared giving as a percentage of discretionary income rather than AGI, which is a more usual comparison. Therefore the fractions and percentages involved are a lot higher. Interestingly, by this metric, the most generous group is the somewhat above the median in terms of income---call it the top half of the middle middle class.
Also, rich people living outside wealthy enclaves are considerably more generous.
I tend to see things more in terms of AGI honestly, as I view the decision to live in, say, Portland Oregon, as a consumption decision relative to other less pleasant options, but I'm sure lots of folks, especially on the left side of the spectrum, will studiously try to ignore that fact.
We All Have a Great Deal of Guano in Our Destiny
3 hours ago