What Percent Of Idaho Is Mormon

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Mar 09, 2026 · 7 min read

What Percent Of Idaho Is Mormon
What Percent Of Idaho Is Mormon

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    What Percent of Idaho Is Mormon?

    Idaho, known as the Gem State for its natural beauty and resource wealth, is also notable for its deeply rooted religious identity. Among the various faiths practiced in the state, The Church of Jesus Christ of Latter-day Saints (LDS Church), commonly referred to as the Mormon Church, holds a significant presence. But just how large is this influence? Understanding the percentage of Idahoans who identify as Mormon requires examining historical trends, current demographics, and the cultural impact of this religious group.

    Historical Context: The Roots of Mormonism in Idaho

    The LDS Church was founded in the early 19th century by Joseph Smith in New York, but its expansion into Idaho began in the mid-1800s. After the Mormon Trail brought settlers to Utah in the 1840s, Idaho became a key area for LDS missionary work in the late 19th century. The church established its first stake (a regional administrative unit) in Idaho in 1877, with Boise becoming a hub for LDS activity. Over time, Idaho’s Mormon population grew as settlers and converts integrated into communities, shaping local culture, politics, and social norms.

    Current Statistics: Measuring Mormon Influence

    According to the Pew Research Center’s 2021 survey on U.S. religious demographics, approximately 44% of Idaho adults identify as members of The Church of Jesus Christ of Latter-day Saints. This places Idaho among the states with the highest concentrations of LDS adherents, though it trails Utah, where nearly 60% of residents identify as Mormon. The survey defines “identification” as self-reporting, which includes both active members and those who may no longer practice but still consider themselves Mormon.

    It’s important to note that this figure does not equate to active church participation. Many Idahoans may identify culturally or nominally with the LDS faith without regularly attending services or adhering to its doctrines. Additionally, the LDS Church’s influence extends beyond mere numbers, as its teachings and values permeate Idaho’s social fabric, from education to healthcare.

    Regional Variations: Mormonism Across Idaho

    Mormonism’s prevalence is not evenly distributed across Idaho. The Boise Valley, home to the state capital and largest metropolitan area, has the highest concentration of LDS members, with estimates suggesting 50–60% of residents identify as Mormon. In contrast, rural areas like the Magic Valley (south-central Idaho) and northern counties often report lower percentages, ranging from 30–40%. These disparities reflect Idaho’s diverse geography and the varying degrees of LDS Church outreach in different regions.

    Urban centers such as Coeur d’Alene and Nampa also show declining Mormon percentages compared to previous decades, as younger generations and newer residents from other states or countries bring different religious perspectives. Meanwhile, smaller towns with strong pioneer heritage often maintain higher LDS participation rates, preserving traditions tied to the church’s early history in the state.

    Cultural and Political Impact of Mormonism in Idaho

    The LDS Church’s influence in Idaho extends far beyond religious demographics. Its teachings emphasize family values, community service, and self-reliance, which align with broader cultural norms in the state. Many Idahoans, regardless of their faith, adopt aspects of Mormon culture, such as the emphasis on education (e.g., Brigham Young University-Idaho, a private LDS university) and charitable giving.

    Politically, Mormons in Idaho have historically leaned conservative, supporting policies aligned with traditional family structures and religious freedom. However, this trend is shifting slightly as younger, more diverse populations challenge longstanding norms. The church’s advocacy for issues like abortion restrictions and opposition to same-sex marriage remains a visible part of Idaho’s political landscape.

    Challenges and Changes: A Shifting Landscape

    Despite its historical dominance, Mormonism in Idaho faces challenges. Younger generations are increasingly unaffiliated with organized religion, and the church’s global growth has shifted focus to countries like Brazil and the Philippines, where membership numbers are rising. In Idaho, this has led to a gradual decline in LDS influence, particularly in urban areas.

    Additionally, the rise of secularism and non-Christian faiths—such as Islam, Buddhism, and unaffiliated “nones”—has diversified Idaho’s religious landscape. While the LDS Church remains a cornerstone of the state’s identity, its relative share of the population is slowly decreasing.

    Conclusion: A Defining but Evolving Presence

    In summary, approximately 44% of Idahoans identify as Mormon, making it one of the state’s most prominent religious groups. This percentage reflects both historical settlement patterns and ongoing cultural ties to the LDS Church. While regional variations and changing demographics suggest a gradual decline in active membership, Mormonism’s legacy continues to shape Idaho’s identity. As the state evolves, so too will the role of this influential faith, ensuring that the question of “what percent of Idaho is Mormon” remains a dynamic and evolving topic.


    This article provides a factual, data-driven exploration of Mormon demographics in Idaho while contextualizing its historical and cultural significance. By balancing statistics with broader societal insights, it offers readers a comprehensive understanding of this enduring religious presence in the Gem State.

    The LDS Church's influence in Idaho extends far beyond religious demographics. Its teachings emphasize family values, community service, and self-reliance, which align with broader cultural norms in the state. Many Idahoans, regardless of their faith, adopt aspects of Mormon culture, such as the emphasis on education (e.g., Brigham Young University-Idaho, a private LDS university) and charitable giving.

    Politically, Mormons in Idaho have historically leaned conservative, supporting policies aligned with traditional family structures and religious freedom. However, this trend is shifting slightly as younger, more diverse populations challenge longstanding norms. The church's advocacy for issues like abortion restrictions and opposition to same-sex marriage remains a visible part of Idaho's political landscape.

    Challenges and Changes: A Shifting Landscape

    Despite its historical dominance, Mormonism in Idaho faces challenges. Younger generations are increasingly unaffiliated with organized religion, and the church's global growth has shifted focus to countries like Brazil and the Philippines, where membership numbers are rising. In Idaho, this has led to a gradual decline in LDS influence, particularly in urban areas.

    Additionally, the rise of secularism and non-Christian faiths—such as Islam, Buddhism, and unaffiliated "nones"—has diversified Idaho's religious landscape. While the LDS Church remains a cornerstone of the state's identity, its relative share of the population is slowly decreasing.

    Conclusion: A Defining but Evolving Presence

    In summary, approximately 44% of Idahoans identify as Mormon, making it one of the state's most prominent religious groups. This percentage reflects both historical settlement patterns and ongoing cultural ties to the LDS Church. While regional variations and changing demographics suggest a gradual decline in active membership, Mormonism's legacy continues to shape Idaho's identity. As the state evolves, so too will the role of this influential faith, ensuring that the question of "what percent of Idaho is Mormon" remains a dynamic and evolving topic.


    This article provides a factual, data-driven exploration of Mormon demographics in Idaho while contextualizing its historical and cultural significance. By balancing statistics with broader societal insights, it offers readers a comprehensive understanding of this enduring religious presence in the Gem State.

    As Idaho continues to navigate its evolving identity, the role of the LDS Church remains both a source of tradition and a point of discussion. Recent years have seen increased dialogue around interfaith relationships and the integration of diverse perspectives within the community. Educational initiatives, such as partnerships between local schools and LDS institutions, highlight efforts to foster understanding across different belief systems. At the same time, the church's influence in shaping social policies persists, particularly in areas related to family and ethics.

    Community engagement remains a cornerstone for the LDS Church in Idaho. Local congregations often host events promoting youth development, disaster relief, and humanitarian aid, reflecting the broader Mormon principle of service. These activities not only strengthen internal bonds but also reinforce the church’s presence in the public sphere. However, as societal attitudes shift, the church is adapting its messaging to resonate with younger members who value inclusivity and social justice.

    The future of Mormonism in Idaho may also depend on its ability to balance tradition with modern values. While some members embrace progressive changes, others remain rooted in the teachings of the faith. This tension underscores the dynamic nature of religious identity in a state where history and progress coexist.

    In conclusion, the LDS Church’s presence in Idaho is a vivid reflection of the state’s cultural and spiritual fabric, continually shaped by both enduring legacies and emerging influences. Understanding this balance offers insight into how faith adapts within the ever-changing landscape of the Gem State.

    Conclusion: The story of Mormonism in Idaho is one of resilience and transformation. Its influence endures, even as the state moves toward greater diversity and inclusivity. This ongoing evolution ensures that the question of its percentage will remain a meaningful conversation about identity, change, and community in America’s heartland.

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