Since its launch, in late December 1999, approximately 750,000 Jewish young adults – more than 425,000 from the United States – have participated in Birthright’s ten-day educational programs. Numerous studies have demonstrated Birthright’s impact on the Jewish identity of its participants. Less appreciated is how the program is reshaping American Jewry’s demographic profile. When Birthright was launched, there were approximately 5.5 million Jews in the United States. Today, the US Jewish population is 7.5 million individuals, a 25% increase. Birthright is not solely responsible for the growth, but the program has become emblematic of efforts to engage future generations with Jewish life.