What SAT score do you need to be in the top 20% of the population?

Answer 1

http://professionals.collegeboard.com/profdownload/sat-percentile-ranks-2010.pdf

http://collegestats.org/articles/2010/02/the-ultimate-guide-to-sat-test-statistics/

Answer 2

Maybe this link will help answer your question.

http://satteststudy.com/average-sat-score/