Reports The Denver Post:
Using a "low growth" model of 2 percent per year for the next century, Koltko-Rivera calculates that Mormons will number more than 21 million worldwide by 2030 and more than 125 million by 2120.
Yet Koltko-Rivera argues that the "high growth" model of sustained annual growth of 5.5 percent is more likely, putting the global Mormon population at more than 24 million by 2030 and 2.6 billion by 2120.
Even many LDS faithful have trouble swallowing that figure.
His projections were made before the church decided to allow young men to go on missions at 18 instead of 19. Young women, who make up a little more than half the new applications, can now go at age 19, rather than waiting until they're 21. Women previously had made of only a fifth of the 58,000-strong missionary force across the world.


First of all, the blind application of exponential growth rates over a time period greater than 100 years is unsupportable. Even in grade school we learned the dangers of large extrapolations, and the problem is even more acute when extrapolating with exponential functions.
Second: Real populations cannot grow sustainably with any exponential rate. Initial growth rates are often approximately exponential, but inevitably there are sources of population loss that increase with increasing population, leading to leveling off and quasi equilibrium. While simple minded social scientists might extrapolate 100 years into the future using an exponential curve fit, a far more applicable approach is to apply least-squares regression using the Logistic curve. See, for example, the following discussion:
http://en.wikipedia.org/wiki/Logistic_function
In fact, when examining actual LDS population figures, the logistic curve has a far better fit coefficient than the exponential curve. An analysis of the Logistic function to LDS population figures shows that LDS population (world wide) will stabilize at just a bit over 30 million. See, for example, the analysis at the following link:
http://www.belnapfamily.org/brentjbelnap/institute/Anderson_Church_Growth_Rates.pdf
Sorry, dear Mormons -- you aren't going to be taking over the world anytime soon. Rather, you will remain a marginal religion with a checkered history that you will find increasingly difficult to keep hidden.
Finally, it's worth noting that the analysis has been conducted using Mormon membership figures -- yet the Mormon Church is known to lie about those figures. For example, insiders at the LDS Church office building confirm that the Mormon Church continues to count people even after they formally resign, and that the number of formal resignations is approaching 1.5 million. Additionally, the Mormon Church counts as members people who leave and join other religions. Independent surveys consistently show that the number of self-reporting Mormons in the US and other countries is only half (or less) than the Mormon-reported membership. See, for example, the following link:
http://exmormon.org/d6/drupal/Mormon-Church-falsifies-US-membership-numbers
If the *actual* membership figures are used, the LDS Church membership is already stagnant, and possibly falling.
So much for the stone cut out of the mountain.
This will be in part because the member that was allowed to run for president is a failure as a human being. He has defined the religion, the identity of membership. Nobody wants to be like him, or be close to him, or close to others who think like he does.