| American Institutes For Research In The |
VA |
$437,187,471 |
$1,647,659 |
| National Opinion Research Center |
IL |
$397,190,163 |
$1,357,245 |
| American Enterprise Institute For Public |
DC |
$67,952,475 |
$1,123,965 |
| American Psychological Association |
DC |
$138,293,695 |
$1,068,705 |
| The Urban Institute |
DC |
$124,658,351 |
$1,022,915 |
| National Bureau Of Economic |
MA |
$61,021,762 |
$924,694 |
| The Aspen Institute Inc |
DC |
$443,841,184 |
$911,570 |
| Buck Institute For Research On Aging |
CA |
$69,534,711 |
$845,957 |
| The Economic Club Of New York |
NY |
$4,736,879 |
$826,293 |
| The Narbha Institute Inc |
AZ |
$11,163,371 |
$822,513 |
| Just Capital Foundation Inc |
NY |
$11,808,522 |
$720,000 |
| Secured Finance Network Inc |
NY |
$6,302,063 |
$712,165 |
| Alzheimer's Drug Discovery Foundation |
NY |
$37,742,020 |
$664,906 |
| Ithaka Harbors Inc |
NY |
$125,968,256 |
$647,268 |
| American Academy Of Arts & Sciences |
MA |
$17,314,069 |
$641,872 |
| Americans For Prosperity Foundation |
VA |
$4,378,810 |
$627,914 |
| Association Of American Geographers |
DC |
$2,389,538 |
$606,618 |
| Peter G Peterson Institute For |
DC |
$10,868,277 |
$605,782 |
| Laureate Institute For Brain Research Inc |
OK |
$16,100,346 |
$600,947 |
| American Institute For Economic |
MA |
$5,149,493 |
$585,837 |
| The Brookings Institution |
DC |
$89,444,146 |
$573,140 |
| Pew Research Center |
DC |
$46,735,865 |
$565,157 |
| Global Poverty Project Inc |
NY |
$60,584,232 |
$545,418 |
| Out & Equal |
CA |
$15,172,285 |
$540,448 |
| Mercatus Center Inc |
VA |
$39,338,379 |
$536,530 |
| The Institute For New Economic Thinking |
NY |
$429,626 |
$521,435 |
| American Federation For Aging Research |
NY |
$22,829,335 |
$507,069 |
| Human Resources Research Organization |
VA |
$70,443,200 |
$502,794 |
| Economic Policy Innovation Center Inc |
DC |
$2,662,898 |
$502,771 |
| Rsf Social Finance Inc |
CA |
$40,993,452 |
$488,700 |
| Memorial Hermann Community Benefit |
TX |
$16,670,488 |
$477,530 |
| Esalen Institute |
CA |
$22,438,038 |
$468,423 |
| Atlas Economic Research Foundation |
VA |
$28,784,181 |
$467,132 |
| Salzburg Global Seminar Inc |
DC |
$14,991,239 |
$466,198 |
| Better Markets Inc |
DC |
$3,944,867 |
$456,824 |
| Council On Governmental Relations |
DC |
$3,333,311 |
$454,741 |
| Council For Economic Education |
NY |
$6,919,375 |
$434,880 |
| Woodrow Wilson International Center |
DC |
$30,377,522 |
$426,067 |
| Social Science Research Council |
NY |
$23,469,764 |
$418,911 |
| Detroit Economic Club |
MI |
$1,830,273 |
$415,814 |
| American Economic Association |
TN |
$14,309,259 |
$415,194 |
| The Becket Fund |
DC |
$18,849,672 |
$414,925 |
| Population Reference Bureau Inc |
DC |
$11,745,158 |
$414,706 |
| Via Institute On Character |
OH |
$2,353,046 |
$406,919 |
| Population Connection |
DC |
$17,044,460 |
$388,845 |
| Institute For Operations Research And |
MD |
$16,211,301 |
$374,584 |
| Open To Debate Foundation |
NY |
$2,915,960 |
$367,952 |
| Senior Connections Inc |
MA |
$5,737,082 |
$357,580 |
| Midwestern Higher Education Compact |
MN |
$9,929,448 |
$343,497 |
| Coalition For A Prosperous America Inc |
DC |
$3,636,590 |
$341,645 |