The Vanishing Protestant Majority

Since colonial times, the United States has been a majority Protestant nation. But the proportion Protestant in the population has been falling for over a decade, and Protestants are poised to lose their majority status. This decline results from a decline in the intergenerational retention rate for Protestants and from the attrition of Protestants among the youngest cohorts. Shifts in immigration also contribute to the Protestant decline. We also consider the role of an increasing share of people identifying as generic Christians and as inter‐ or nondenominational.