Least Religious States 2020

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.”

Least Religious States 2020

State Non-Religious Rank Religious Adults 2020 Pop.
Massachusetts133.00%6,976,597
New Hampshire133.00%1,371,246
Maine334.00%1,345,790
Vermont334.00%628,061
Connecticut443.00%3,563,077
Alaska745.00%734,002
Washington745.00%7,797,095
Wisconsin745.00%5,851,754
New York846.00%19,440,469
Colorado1047.00%5,845,526
Hawaii1047.00%1,412,687
Montana1248.00%1,086,759
Oregon1248.00%4,301,089
California1649.00%39,937,489
Minnesota1649.00%5,700,671
Nevada1649.00%3,139,658
Rhode Island1649.00%1,056,161
Idaho1851.00%1,826,156
Illinois1851.00%12,659,682
Delaware1952.00%982,895
Arizona2453.00%7,378,494
District of Columbia2453.00%720,687
Michigan2453.00%10,045,029
North Dakota2453.00%761,723
Pennsylvania2453.00%12,820,878
Florida2954.00%21,992,985
Indiana2954.00%6,745,354
Maryland2954.00%6,083,116
Nebraska2954.00%1,952,570
Wyoming2954.00%567,025
Iowa3255.00%3,179,849
Kansas3255.00%2,910,357
New Jersey3255.00%8,936,574
New Mexico3357.00%2,096,640
Ohio3458.00%11,747,694
South Dakota3559.00%903,027
Missouri3660.00%6,169,270
Virginia3761.00%8,626,207
Kentucky3863.00%4,499,692
Texas4064.00%29,472,295
Utah4064.00%3,282,115
North Carolina4165.00%10,611,862
Georgia4366.00%10,736,059
Oklahoma4366.00%3,954,821
West Virginia4469.00%1,778,070
Arkansas4670.00%3,038,999
South Carolina4670.00%5,210,095
Louisiana4771.00%4,645,184
Tennessee4873.00%6,897,576
Alabama5077.00%4,908,621
Mississippi5077.00%2,989,260