How many percent of kids go trick or treating on Halloween Day in the USA or in another country?

Answer 1

Current US population is 314,683,036.
http://www.census.gov/main/www/popclock.html

Estimate of kids in the US who will go trick-or-treating tonight is 41,000,000.
http://www.cnn.com/2012/10/30/living/halloween-by-the-numbers/index.html

Divide the second number by the first number to get the estimated percentage.

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