Least Religious States 2019

The United States has seen a steady increase in the number of people who claim no religion since 1990.

In a 2018 survey of over 2,000 people, 23.1% said that they were not affiliated with a religion. The survey reported that 23.0% said they were Catholic and 22.5% were evangelicals. All three numbers are within the margin of error with one another, making the results a three-way tie.

People who have “no religion” are a group comprised of atheists, agnostics, the spiritual, and those who have no specific organized religion. Many believe that millennials are driving the trend and that the “no religion” group will be the largest within the next four to six years.

The shift away from any one dominant religious group is seen as beneficial for a secular society with a government built on the idea of separation of church and state.

The least religious states are Massachusetts and New Hampshire, both of which have only 33% of adults identifying themselves as “highly religious.” In Boston, Massachusetts, new belief systems and values dominate the city, shifting people away from religion. These include equality for women and LGBTQ rights, causing more people to reject patriarchal or anti-gay religions. Additionally, people are shifting their focus to higher education’s critical thinking, scientific ways of thinking and evidence, and liberal politics for progress and social justice.

These reasons can be applied to much of the Northeast United States, where most of the least religious states are located. The ten least religious states are:

  1. Massachusetts
  2. New Hampshire
  3. Maine
  4. Vermont
  5. Connecticut
  6. Washington
  7. Wisconsin
  8. Alaska
  9. New York
  10. Colorado

The most religious states in the US are located in the South. Alabama and Mississippi are the most religious states in the US, with 77% of people reporting that they are highly religious. All of the top ten most religious states in the US are located in the Bible Belt, an informal region in the southeast United States where socially conservative evangelical Protestantism and Christian church attendance are the strongest in the nation. Below is a table of each state’s rank from least religious to most religious and the percentage of people in each state identifying as “very religious.”

State Non-Religious Rank Religious Adults 2019 Pop.
Massachusetts133.00%6,939,373
New Hampshire133.00%1,363,852
Maine334.00%1,342,097
Vermont334.00%627,180
Connecticut443.00%3,567,871
Alaska745.00%735,720
Washington745.00%7,666,343
Wisconsin745.00%5,832,661
New York846.00%19,491,339
Colorado1047.00%5,770,545
Hawaii1047.00%1,416,589
Montana1248.00%1,074,532
Oregon1248.00%4,245,901
California1649.00%39,747,267
Minnesota1649.00%5,655,925
Nevada1649.00%3,087,025
Rhode Island1649.00%1,056,738
Idaho1851.00%1,790,182
Illinois1851.00%12,700,381
Delaware1952.00%975,033
Arizona2453.00%7,275,070
District of Columbia2453.00%711,571
Michigan2453.00%10,020,472
North Dakota2453.00%760,900
Pennsylvania2453.00%12,813,969
Florida2954.00%21,646,155
Indiana2954.00%6,718,616
Maryland2954.00%6,062,917
Nebraska2954.00%1,940,919
Wyoming2954.00%572,381
Iowa3255.00%3,167,997
Kansas3255.00%2,910,931
New Jersey3255.00%8,922,547
New Mexico3357.00%2,096,034
Ohio3458.00%11,718,568
South Dakota3559.00%892,631
Missouri3660.00%6,147,861
Virginia3761.00%8,571,946
Kentucky3863.00%4,484,047
Texas4064.00%29,087,070
Utah4064.00%3,221,610
North Carolina4165.00%10,497,741
Georgia4366.00%10,627,767
Oklahoma4366.00%3,948,950
West Virginia4469.00%1,791,951
Arkansas4670.00%3,026,412
South Carolina4670.00%5,147,111
Louisiana4771.00%4,652,581
Tennessee4873.00%6,833,793
Alabama5077.00%4,898,246
Mississippi5077.00%2,987,895