More than half of Americans who traveled in the past two years either volunteered or made a charitable donation to a place they visited, according to a study released Thursday.

“Giving back in some way — formally or informally — is ingrained in the value system of most U.S. travelers,” according to the study, which was conducted by travel researcher Phocuswright on behalf of the U.S. travel industry-supported nonprofit Tourism Cares. “At home or in far-flung destinations, many travelers give back as a matter of course, in a way that is meaningful and convenient to them.”

The study’s sample consisted of 2,551 online respondents, each of whom had a household income of at least $50,000 and had traveled more than 75 miles from home in the past two years. Among those who said that they had donated, 48% said that it was either “very important” or “extremely important” that their travel spending benefit the communities they visit. In addition, 64% said that giving back contributed strongly to the satisfaction of their trip while 34% said that commitment to social responsibility was a factor in their choice of a travel company.

The study, titled “Good Travels: The Philanthropic Profile of the American Traveler,” also revealed that millennials donate more time, more money and more in-kind gifts than older travelers. In fact, the survey found that, among those who had donated, travelers between ages 18 and 34 gave two and a half times more hours, nearly three times more money, and more than four times more in-kind donations than travelers over the age of 55.

“Millennials are often derided as the 'me’ generation, but they may in fact be the 'generous generation,'” the study's authors wrote.

Families also contributed more than other travelers, volunteering for 38 hours on their most meaningful trip, 12 hours longer than the average among the survey respondents who have donated over the past two years.

(Disclosures: Phocuswright is owned by Northstar Travel Media, which also owns Travel Weekly, and Travel Weekly Editor in Chief Arnie Weissmann serves on the board of Tourism Cares.)

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