Percent of Households that Volunteer by Income (2009)
Households with higher incomes tended to give much more to charitable organizations than lower income families. However, while higher income families have a lot more money, they have the same number of hours in the day as low income families. As a result, the graph of volunteering (yes/no) by household income results in an unclear relationship. People from the lowest income families have a lower likeihood of volunteering, perhaps because they are more likely to be recipients of services than volunteer providers. Once household income reaches $50,000 a year, the likelihood of volunteering hovers in the neighborhood of 45 percent, regardless of how wealthy the family becomes.