These Are the 30 Least Religious Cities in America

The United States is a majority Christian country, yet a considerable number of people in some of America’s largest cities identify as unaffiliated when it comes to religion.

A new study from the Public Religion Research Institute breaks down the top three religious traditions in major American cities – Catholic, Protestant and unaffiliated. Based on the data and findings from the American Values Atlas, the Huffington Post put together a ranking of the least religious U.S. cities, according to the percentages of religiously unaffiliated residents.

Here are the least religious cities in America, by their “unaffiliated” percentages:

1. Portland, Oregon (42 percent)

 The downtown skyline is reflected in the flowing Willamette River at sunrise on February 11, 2012 in Portland, Oregon. (Photo by George Rose/Getty Images)
George Rose/Getty Images

2. San Francisco (33 percent)

The Golden Gate Bridge (1933-1937) by Joseph Baermann Strauss, with the bay and the city of San Francisco in the background, California, United States of America. (Photo by DeAgostini/Getty Images)
DeAgostini/Getty Images

3. Seattle (33 percent)

Seattle's Space Needle and the downtown skyline. (Getty Images/Credit: Carl Larson / Contributor)
Getty Images/Credit: Carl Larson/Contributor

4. Denver (32 percent)

Denver Skyline as seen from the Cherry Creek damn road in Denver, Colorado on April 30, 2015.  (Photo By Helen H. Richardson/ The Denver Post)
Helen H. Richardson/ The Denver Post

5. Phoenix (26 percent)

Buildings dot the skyline of Phoenix, Arizona, U.S., on Tuesday, Aug. 18, 2009. (Photo by Joshua Lott/Bloomberg via Getty Images)
Joshua Lott/Bloomberg via Getty Images

6. Tampa-St. Petersburg, Florida (25 percent)

The city skyline, built along several inland waterways, is viewed from Davis Island on February 14, 2011 in Tampa, Florida. (Photo by George Rose/Getty Images)
George Rose/Getty Images

7. Columbus, Ohio (24 percent)

Columbus, Ohio, skyline, 2009 (Photo by Carol M. Highsmith/Buyenlarge/Getty Images)
Carol M. Highsmith/Buyenlarge/Getty Images

8. Detroit (24 percent)

A general view of the Detroit skyline and the Renaissance Center on August 13, 2014 in Detroit, Michigan. (Photo by Paul Marotta/Getty Images)
Paul Marotta/Getty Images

9. Boston (24 percent)

Boston Skyline with view of Historic Fenway Park, Boston Red Sox, Boston, Ma., USA, May 20, 2010, Red Sox versus Minnesota Twins, attendance, 38,144, Red Sox win 6 to 2 (Photo by Visions of America/UIG via Getty Images)
Visions of America/UIG via Getty Images

10. Los Angeles (24 percent)

The Hollywood Sign is viewed from the W Hotel rooftop on Hollywood Boulevard on March 23, 2015 in Hollywood, California.  Millions of tourists flock to the Los Angeles area to visit dozens of top attractions including, the beach, Hollywood Boulevard, and Rodeo Drive in Beverly Hills. (Photo by George Rose/Getty Images)
George Rose/Getty Images

11. Milwaukee (23 percent)

Milwaukee skyline as photographed along Interstate 94 on August 16, 2014 in Milwaukee, Wisconsin. (Photo By Raymond Boyd/Getty Images)
Raymond Boyd/Getty Images

12. Las Vegas (23 percent)

Hotels, casinos, and stores stand illuminated along The Strip at dusk in Las Vegas, Nevada, U.S., on Tuesday, Jan. 6, 2015. (Michael Nagle/Bloomberg via Getty Images)
Michael Nagle/Bloomberg via Getty Images

13. Minneapolis-St. Paul (23 percent)

Photo taken August 17, 2013 shows the skyline of Minneapolis, Minnesota. AFP PHOTO / Karen BLEIER        (Photo credit should read KAREN BLEIER/AFP/Getty Images)
KAREN BLEIER/AFP/Getty Images

14. Washington, D.C. (23 percent)

The skyline of Washington, DC, including the Lincoln Memorial, Washington Monument, US Capitol and National Mall, is seen from the air at sunset in this photograph taken on June 15, 2014. AFP PHOTO / Saul LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)
Saul Loeb/AFP/Getty Images

15. St. Louis (22 percent)

Sunset view of St Louis, Mo skyline and Eads Bridge (Photo by Visions of America/UIG via Getty Images)
Visions of America/UIG via Getty Images

See the rest of the 30 cities at the Huffington Post.

The Public Religion Research Institute’s infographic also breaks down the religious makeups of city populations:

Image source: Public Religion Research Institute
Image source: Public Religion Research Institute

The study used data from the U.S. Census Bureau’s definition of a Metropolitan Statistical Area and noted that the cities may also include outlying non-urban populations in addition to urban populations.

The ranking was published just days after another study from researchers at Baylor University found that places with “beautiful landscapes and good weather” tend to adhere less to traditional religious institutions. It labeled those who do not identify with any one religion as “nones” and suggested that they “may find something of the divine in forests, lakes and mountains.”

The ranking also came just months after the Pew Research Center published a study showing a big decline in the number of Americans who identify with any specific religion, but noted that a majority of Americans still identify as Christian. Another study found that only 3 percent of Americans identify as atheist, but revealed that number is much larger in Seattle, where roughly one in every 10 residents identify as nonbelievers.

(H/T: Huffington Post)

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