Mark Zuckerberg's $1 billion donation represented roughly 13% of the money given by the nation's top 50 donors last year.
This crew donated a total of $7.7 billion in 2013, 4% more than in 2012, according to a new report from The Chronicle of Philanthropy. That brought the median donation to $86.1 million, up from $49.6 million in 2012.
Why so generous? The Chronicle credits last year's improving economy and booming stock market for the surge in donations.
Of all the donors, Facebook(Fortune 500) co-founder and CEO Mark Zuckerberg and his wife Priscilla Chan were by far the most generous. The couple donated nearly $1 billion worth of Facebook stock, or 18 million shares, to the Silicon Valley Community Foundation. The massive gift made the organization, which provides grants to a variety of nonprofits, one of the biggest foundations in the country. ,
Zuckerberg and his wife (who are 29 and 28 years old, respectively) were also the youngest donors on The Chronicle's list, which had a median age of 72.
The second largest contribution was a $750 million bequest from George Mitchell, a billionaire known for pioneering the controversial practice of hydraulic fracturing or "fracking." He died in July at the age of 94.
Those funds will support the Cynthia and George Mitchell Foundation, which provides grants for clean energy, natural gas sustainability and other environmental projects. One of the foundation's main goals is to prevent environmental damage from the technology that Mitchell himself created, the Chronicle stated.
Other top donations included Nike(Fortune 500) co-founder Phil Knight's $500 million to the Oregon Health & Science University Foundation for research on the early detection of deadly cancers and former New York City Mayor Michael Bloomberg, who gave $452 million to a variety of arts, education, environment and public health nonprofits. ,
Meanwhile, few people knew how wealthy one of the top donors was until his death at the age of 98 last year. Dubbed a "secret millionaire" by media reports, Jack MacDonald was a thrifty former lawyer in the Seattle office of the U.S. Department of Veterans Affairs who left behind $139 million in 2013. MacDonald earned his millions by investing the proceeds from the sale of his father's meat company.
His will split his money among the Seattle Children's Hospital, University of Washington School of Law and the Salvation Army, which had no idea that the gift was coming.
"The Salvation Army didn't know at all," said Chronicle editor Stacy Palmer. "They only knew him as a donor who gave $20 at a time."
Philanthropists Bill and Melinda Gates and Warren Buffett were noticeably absent from the top 50 donor list, which is based on new financial commitments made in a given year. It does not track gifts that donors' foundations make using past commitments so as to not count the same money twice.
Bill and Melinda Gates and Warren Buffett's Giving Pledge campaign has been credited with inspiring philanthropy among other billionaires. The Chronicle notes that 19 of 2013's top 50 donors have signed the pledge.
The majority of the donations came from California ($2.8 billion) and New York ($1.6 billion) residents, while other large donations came from Texas, Oregon and Washington state residents.
Colleges and universities were the biggest winners, receiving $2.6 billion or roughly a third of all donations. Foundations received another $2.1 billion, while hospitals and medical centers, museums and library groups and human service groups were among the other recipients.
|Rank||Name||Who they are||Donations (millions)||Recipients|
|1||Mark Zuckerberg and Priscilla Chan||Facebook CEO||$992||Silicon Valley Community Foundation|
|2||George Mitchell||Fracking pioneer (deceased)||$750||Cynthia and George Mitchell Foundation|
|3||Philip and Penelope Knight||Nike co-founder||$500||Oregon Health & Science University Foundation|
|4||Michael Bloomberg||Former NYC mayor, founder of Bloomberg L.P.||$452||Arts, education, environment, public health and other causes|
|5||John and Laura Arnold||Hedge fund founder||$296||Laura and John Arnold Foundation, Fidelity Charitable Gift Fund|
|6||Charles Johnson||Retired businessman, principal owner of San Francisco Giants||$250||Yale University|
|7||Pierre and Pam Omidyar||eBay founder||$225||Omidyar Network, Humanity United, Ulupono Initiative, and HopeLab|
|8||Irwin and Joan Jacobs||Qualcomm co-founder||$221||The Jacobs Technion-Cornell Innovation Institute at Cornell NYC Tech, Jewish Community Foundation San Diego Donor Advised Fund, Dunaway Foundation, San Diego Public Library Foundation|
|9||Sergey Brin and Anne Wojcicki||Google co-founder||$219||Brin Wojcicki Foundation, Michael J. Fox Foundation for Parkinson's Research|
|10||Jeffrey Carlton||Founder of Press Forge, a metal alloy company (deceased)||$212||Jeffrey Carlton Charitable Foundation|
|11||Paul Allen||Microsoft co-founder||$206||Paul G. Allen Family Foundation, EMP Museum|
|12||Stephen Ross||Real estate mogul||$200||University of Michigan at Ann Arbor|
|13||Ronald Perelman||Finance CEO||$196||Columbia Business School, New York University Langone Medical Center, other groups|
|14||Muriel Block||Commercial real estate owner||$160||Albert Einstein College of Medicine of Yeshiva University|
|15||Eli and Edythe Broad||Founder chairman of KB Home and Sun America||$157||Broad Foundations|
|16||John Arrillaga||Real estate development executive||$151||Stanford University|
|17||Charles Munger||Vice Chairman of Berkshire Hathaway||$150||University of Michigan at Ann Arbor, Huntington Library, Art Collections, and Botanical Gardens|
|18||Theodore (Ted) and Vada Stanley||Businessman||$144||Stanley Family Foundation, Stanley Center for Psychiatric Research at the Broad Institute, other groups|
|19||Jack MacDonald||Attorney and investor (deceased)||$139||Salvation Army Northwest Division, University of Washington School of Law, Seattle Children's Hospital|
|20||T. Denny Sanford||Founder of First Premier Bank||$131||University of California at San Diego, Crazy Horse Memorial Foundation, South Dakota State University|
|Saudi Arabia: We'll never cut oil production|
|Another blackout for Dish customers, this time Fox News|
|Premarkets: 4 things to know before the open|
|Sony doesn't know how but says 'The Interview' will be shown|
|Justin Bieber just lost 3.5 million Instagram followers|