eJewish Philanthropy is an online platform that records Jewish charitable donations.
Their report (see below) shows that most American Jews are charitable givers. 76% of American Jews report that they made a charitable contribution in 2012. Most Jews who make charitable contributions give to both Jewish and non-Jewish organizations. Among Jews who make charitable contributions, nearly all of them (92%) give to a non-Jewish organization and the vast majority (79%) gives to a Jewish organization. As the income levels of American Jews rise, so do all measures of their charitable giving.