Verified Organizations
Organizations in orange have not verified, those in gray have verified but are pending review and those in green are verified and confirmed.
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Verify Your STACK UP! Total
Previous Years
- 2025 STACK UP! 775,000 Goal
- 2024 STACK UP! 752,632 Stackers
- 2023 STACK UP! 746,698 Stackers
- 2022 STACK UP! 737,863 Stackers
- 2021 STACK UP! 509,544 Stackers
- 2019 STACK UP! 638,503 Stackers
- 2018 STACK UP! 624,390 Stackers
- 2017 STACK UP! 578,704 Stackers
- 2016 STACK UP! 622,809 Stackers
- 2015 STACK UP! 618,394 Stackers
- 2014 STACK UP! 592,292 Stackers
- 2013 STACK UP! 555,932 Stackers
- 2012 STACK UP! 483,658 Stackers
- 2011 STACK UP! 412,259 Stackers
- 2010 STACK UP! 316,736 Stackers
- 2009 STACK UP! 276,053 Stackers
- 2008 STACK UP! 222,560 Stackers
- 2007 STACK UP! 143,530 Stackers
- 2006 STACK UP! 81,252 Stackers