Less than half
Over the past 20 years, the share of U.S. households that give to charity fell from about two-thirds to…
Over the same period, the number of U.S. nonprofits grew by 34%.
Source: Giving USA givingusa.org
Society · Guess the stat
How well do you know donations?
Guess the real numbers behind charitable giving and blood and organ donation, see how everyone else guessed, and get the source.
Guess the statOne tap · see how everyone guessed
About how many people were on the U.S. national organ transplant waiting list in 2026?
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Today's round
- 4 stats to guess
- 1 opinion poll
- 0 played today
Guess, see the crowd, get the real number. One ranked attempt per day.
Donation by the numbers
Real figures with their sources. All Donation facts →
Every 2 seconds
How often does someone in the U.S. need blood or platelets?
About 29,000 units of red blood cells are needed every day in the U.S.
Source: American Red Cross redcrossblood.org
Up to 42 days
How long can donated red blood cells be stored before they must be used?
Platelets must be used within just 5 days, which is why donations are always needed.
Source: American Red Cross redcrossblood.org
What people think about charitable giving, blood and organ donation
Vote to see the live results. All polls →
What kind of giving matters most to you?
How do you prefer to donate to a cause?
Which cause would you give to first?
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Questions
How does DonationSurvey.com work?
Each question asks you to guess a real number about charitable giving, blood and organ donation. After you answer you see how everyone else guessed, then the real figure and where it comes from.
How is the daily round scored?
Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.
Where do the numbers come from?
Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.
Is it free?
Yes. Playing, streaks, badges and leaderboards are free, and your votes stay anonymous.