The Top 20 Nonprofit Groups on Twitter

Which nonprofits wield the most influence on Twitter?

It’s not one of America’s most established or best-known organizations. It’s Charity: Water, a new global-development group that has 1.3 million followers, far more than any other charitable group we could find.

Only five organizations from the top 20 Twitter list appear on The Chronicle’s latest survey of the top 400 nonprofit organizations ranked by private donations: Red Cross (13), Unicef (21), Care (33), Save the Children (66), and World Wildlife Fund (173).