Mormon Population Trends Utah Reveal A Subtle Shift
- 01. Utah's Mormon share is declining, but the state still has the nation's largest Latter-day Saint population and the deepest cultural imprint of the Church of Jesus Christ of Latter-day Saints.
- 02. What the trend means
- 03. Historic decline in share
- 04. Why the share is falling
- 05. Data snapshot
- 06. What the numbers really show
- 07. Historical context
- 08. Implications ahead
- 09. Frequently asked questions
Utah's Mormon share is declining, but the state still has the nation's largest Latter-day Saint population and the deepest cultural imprint of the Church of Jesus Christ of Latter-day Saints.
The broad trend is clear: Utah's Mormon population has been losing share for decades because of in-migration from other states, lower fertility among Latter-day Saints than in the past, and a growing number of former members and religiously unaffiliated residents. At the same time, Utah remains the epicenter of Latter-day Saint life in the United States, with the Church's largest concentration of members, congregations, institutions, and social influence still anchored in the state.
What the trend means
The key question behind Utah demographics is not whether the Mormon population is still large, but whether it still constitutes a majority and how fast that share is changing. Recent reporting and research point in the same direction: Utah is becoming more religiously diverse, while Latter-day Saints remain the single largest faith group. A 2024 analysis from the Kem C. Gardner Policy Institute estimated that 76.1% of Utah residents identified with a religion of some kind, the highest share of any state, while the Church of Jesus Christ of Latter-day Saints remained the largest religious body in the state and grew 11.3% between 2010 and 2020.
But the meaning of "Mormon population" depends on the metric used. Church membership counts, survey self-identification, and household composition can produce very different results, so a headline percentage can look contradictory unless the source is clear. That is why some recent estimates place the Mormon share far below older church-based counts, while other measures still show a strong Latter-day Saint presence across the state.
Historic decline in share
Utah's religious shift has been visible for many years. In 2007, an Associated Press report noted that Latter-day Saints made up 60.7% of Utah's population, described then as the lowest share ever recorded, and said the percentage had declined every year for nearly two decades. The same report warned that if the trend continued, Mormons could fall below half of Utah's population by 2030.
More recent research suggests that the "below half" threshold may already have been crossed in some datasets. A 2024 report cited a paper in the Journal of Religion and Demography estimating that about 42% of Utahns identify as Latter-day Saints, a much lower figure than older media reports based on church membership totals. That gap highlights the difference between active identity and formal membership records.
Why the share is falling
Several forces are pushing the Mormon share downward. First, Utah has absorbed a large number of newcomers from other states, many of whom do not belong to the Church. Second, fertility patterns have changed over time, reducing the natural growth advantage that once helped sustain a dominant LDS majority. Third, retention has weakened, with some research cited in 2024 suggesting that roughly a third of people raised LDS now leave the religion.
- Migration has diversified Utah's population, especially in the Wasatch Front metro corridor.
- Retention has softened as younger generations are less likely to remain active LDS.
- Fertility differences have narrowed, reducing the long-term demographic edge once associated with Mormon households.
- Survey identity now captures a smaller share than official membership totals, showing how belief and affiliation can diverge.
Data snapshot
The following table summarizes the most useful recent reference points for readers tracking Utah religion. The figures are drawn from different sources and methods, so they should be read as indicators of trend rather than perfectly interchangeable measurements.
| Measure | Estimate | Year / Period | What it reflects |
|---|---|---|---|
| Mormon share of Utah population | 60.7% | 2007 | Church-based estimate reported by AP |
| LDS identity among Utah adults | About 50% | 2023-2024 | Pew-based survey result for self-identified adults |
| LDS share in Utah | About 42% | 2024 estimate | Research estimate cited in local reporting |
| Religious adherents of any faith in Utah | 76.1% | 2024 summary of 2010-2020 data | Share of residents affiliated with a religion |
| LDS growth in Utah | 11.3% | 2010-2020 | Growth in number of adherents, not share |
What the numbers really show
The most important takeaway from the population trend is that Utah is not simply "less Mormon" in a uniform way; it is more accurately becoming more demographically mixed. Even when the LDS Church grows in absolute numbers, its share can fall if the total state population grows faster. That is exactly what has happened in many fast-growing Utah counties and metro areas, where migration has outpaced religious conversion or retention.
That distinction matters for policy, business, and politics. A declining share can reduce the Church's ability to assume automatic majority status in public life, but it does not erase its institutional presence. The LDS Church still shapes local philanthropy, education, family networks, and civic culture in ways that go well beyond head counts.
Historical context
Utah's identity as a Mormon-majority state dates back to the 19th century, when pioneer settlement created a dense network of LDS communities and institutions. For much of the 20th century, those patterns reinforced one another: high birth rates, strong retention, and limited in-migration kept the Church dominant in both social and political life. By the 2000s and 2010s, however, the combination of national mobility and changing religious affiliation began to reshape the state's composition.
The shift has not eliminated Utah's distinctive religious profile. Even the newer survey data showing a lower LDS share still found Utah adults to be more religiously engaged than the national average in several ways, including daily prayer and weekly service attendance. That means Utah's transformation is less a move toward secular emptiness than a move toward pluralism.
Implications ahead
- Majority status is no longer something researchers can assume without checking the definition used.
- County variation likely remains substantial, with some areas still deeply LDS and others far more mixed.
- Political influence will depend more on turnout, age structure, and geography than on raw membership totals.
- Future growth will hinge on retention, migration, and the religious makeup of younger Utahns.
For readers tracking the next phase of Utah politics, the real story is not a sudden collapse of Mormon influence but a gradual rebalancing of power in a fast-growing state. Utah still stands out nationally for its religious density, but the composition of that religiosity is changing. The state's future is likely to be defined by coexistence between a large LDS population and a broader mix of religious and nonreligious residents.
"The percentage has declined every year for nearly two decades."
Frequently asked questions
Everything you need to know about Mormon Population Trends Utah Reveal A Subtle Shift
Is Utah still majority Mormon?
It depends on the source and definition, but recent research suggests Utah may no longer be majority Mormon by self-identification, with one 2024 estimate placing LDS identification at about 42% of residents. Older church-based counts and membership totals can still make the state look more heavily Mormon than survey data does.
Why do different sources give different percentages?
Different sources measure different things: church membership, self-identification, weekly activity, or household affiliation. Membership rolls usually produce higher numbers than surveys because some members are inactive, non-identifying, or no longer living in the state.
Is the Mormon population in Utah still growing?
Yes in absolute terms, but not always as a share of the total population. A 2024 summary from the Kem C. Gardner Policy Institute said the Church grew 11.3% in Utah from 2010 to 2020, even as the state became more religiously diverse overall.
What is driving the demographic change?
The biggest drivers are in-migration, lower retention among younger generations, and changing fertility patterns. Research cited in 2024 also suggested that nearly a third of those raised LDS now leave the religion, which compounds the long-term decline in share.
Does this mean the LDS Church is losing influence?
Not necessarily. A smaller share of the population does not automatically mean less influence, especially in a state where the Church remains the largest religious body and has deep institutional roots. Utah is becoming more pluralistic, but LDS cultural and civic influence remains substantial.