The religiously unaffiliated — an identity that broadly encompasses everyone from strong atheists and agnostics, to New Agers, deists, and “unchurched” Christians — make up almost a quarter of the U.S. population (22 percent to be exact). Unsurprisingly, some regions, states, and cities are more likely to be irreligious than others. The Public Religion Research Institute (PRRI) lists the major U.S. cities that have the most (and the fewest) people without formal religion.
Note that the data come from the results of over 50,000 interviews across these metropolitan areas. Perhaps it is little surprise that the northeastern and western parts of the country are where most of the least religious cities are located; these regions as a whole tend to be pretty secular, especially when compared to the “Bible Belt” of the south (where the least secular cities are situated).
With 42 percent of its residents identifying as religiously unaffiliated, Portland occupies a space all its own. “Portlandia”, an urban mecca for eco-conscious free spirits, has substantially more unaffiliated residents than the next three most religiously unaffiliated cities, Seattle (33 percent), San Francisco (33 percent) and Denver (32 percent).
The least unaffiliated city in the U.S.? Nashville, with only 15 percent of its residents identifying as religiously unaffiliated. A plurality (38 percent) of Nashville is white evangelical Protestant.
Granted, by the standards of the historically devout South, 15-18 percent nonreligious is pretty high. A large part of this may have to do migration of people from the less religious northeast, a trend that began in the 1960s and ’70s and has continued to this day. Aside from the secularizing effect of these transplants, the results may also reflect the tendency for cities in general to be less religious than rural or smaller urban areas.
Given the overall growth in “Nones” — those who claim no religious affiliation in Census surveys — it is likely that the percentage of irreligious people in cities across the country will continue to grow. Again, this hardly reflects the growth of atheists or agnostics per se, just in people unwilling to identify or associate with any formal religious label or institution.
As for my hometown and current residence of Miami, I guess I am not too surprised that we are just around the national average. The city has a large youth population buttressed by many international and northern migrants. While Hispanics tend to be fairly religious, their children and grandchildren — like younger generations of most other demographic groups — are often less so.