Washington State Counties Ranked as Most Religious

Some counties in the state buck the trend of low religiosity.

Published on Feb. 8, 2026

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While Washington is generally seen as one of the least religious states in the U.S., a recent report analyzed census data to identify the counties with the greatest and least number of residents who attend church services. The results show that some counties, despite their small populations, have a higher level of religious participation than the state average.

Why it matters

Understanding the religious landscape of Washington State provides insight into the diversity of communities and values across the region. This data can inform policy decisions, community planning, and the work of religious organizations.

The details

The report, based on data from usreligioncensus.org, found that the largest religions in Washington are Non-Religious (38%), Evangelical (23%), Catholic (14%), Other Religion (10%), and Protestant (9%). Nationally, the religions with the largest number of followers are Catholic, Non-denominational Christian, Southern Baptist, United Methodist, and Church of Jesus Christ of Latter-Day Saints (Mormon).

  • The religious landscape study was conducted by Pew in 2026.

The players

Pew Research Center

A nonpartisan American think tank that provides information on social issues, public opinion, and demographic trends shaping the United States and the world.

usreligioncensus.org

A website that provides data and analysis on religious congregations and adherents in the United States, based on U.S. Census data.

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The takeaway

While Washington is known for its low religiosity, this data shows that some counties in the state have a higher level of religious participation than the overall state average. This highlights the diversity of communities and values across the region.