Why It’s a Curse that Christianity is Declining—And Why It’s Also a Blessing

In 2020, 72% of American adults described their faith as “Christianity.” In 2025, only 66% said the same. That 8% drop translates to a decline of 15 million adults over 5 years. That’s 15 million fewer self-identifying Christians.

During the same amount of time, other major faiths have been adding numbers. Judaism grew its numbers by 21%, Islam did so by 12%, and Buddhism expanded by 56%. Now, these other faiths are still only a small part of the total population (3%, 2%, and 1% respectively), but their growth rates are still startling when compared to Christianity’s metrics.