1. For the first time ever, America is not a majority Protestant nation. Only 47 percent of America identified as Protestant in 2014. At 81 percent, Mississippi is the most Protestant state in the union and Massachusetts is the least at 26 percent.
2. White Christians are the minority in 19 states. Hawaii and California have the smallest white Christian populations of any state—20 percent and 25 percent, respectively. White Christians also make up a modest proportion of the residents in other western states, including Oregon (43 percent), Washington (42 percent), Nevada (36 percent), and Arizona (38 percent).
3. More than 1-in-5 Americans are religiously unaffiliated. At 22 percent, the religiously unaffiliated rival other major religious groups in size, such as American Catholics, who make up 22 percent of the population. Young people are also three times more likely than seniors to be religiously unaffiliated—34 percent vs. 11 percent.
4. In fact, the religiously unaffiliated is the largest religious groups in 13 states, including Oregon (37 percent), New Hampshire (35 percent), Washington State (33 percent), and Vermont (32 percent).
5. The Northeast is still Catholic country. Over one-third (34 percent) of Northeast residents identify as Catholic—and 77 percent of the Catholics are white. Rhode Island is the most Catholic state in the union—more than 4-in-10 (44 percent) Rhode Islanders are Catholic.