Will Your Grandchildren Be Jewish?

Dating Jewish, marrying Jewish, having Jewish kids...what are the odds that your children and grandchildren will be Jewish? The following chart uses the intermarriage rates and average number of kids for several Jewish denominations to calculate how many Jewish children, grandchildren and great-grandchildren a starting population of 100 will produce.
(Based on the work of Anthony Gordon and Richard M. Horowitz.)

# of Jewish descendants per generation, starting with a population of 100 Jews in the first generation:
  Unaffiliated Reform Conservative Modern Orthodox Orthodox
First Generation (You) 100 100 100 100 100
Second Generation
(Your kids)
36 51 62 151 295

Third Generation
(Your grandkids)

13 26 38

228

874

Fourth Generation
(Your great-grandkids)

5 13 24 346 2588
 
Average Children Per Family 1.62 1.72 1.82 3.23 6.4
Intermarriage Rate 72% 53% 37% 3% 3%

See the data visually (PDF format):

© Anthony Gordon and Richard M. Horowitz, used with permission

Learn more about the study from which this data is taken:

Will Your Grandchildren Be Jews? at simpletoremember

Will Your Grandchildren Be Jews? at 613.org

whydatejewish.com