Salt Lake City Mormon Rate: What The Latest Numbers Show
In Salt Lake City, the percentage of residents affiliated with The Church of Jesus Christ of Latter-day Saints stands at approximately 48.9% as of the latest 2018 church membership data for Salt Lake County, which encompasses the city and shows Mormons as a minority for the first time since records began in the 1930s. Independent estimates suggest active participation is much lower, around 24-28%, due to inactivity rates of about 40-50% among members. This marks a significant demographic shift in Utah's capital, driven by immigration, secularization, and youth exodus from the faith.
Historical Trends
The Mormon population in Salt Lake County has steadily declined from over 50% in the early 2010s to 48.91% by late 2018, with 558,607 members out of 1,142,077 residents according to church rolls obtained by The Salt Lake Tribune on December 9, 2018. In September 2017, the figure was still 50.07% for Salt Lake City proper amid a population of 561,433 and 1,121,354 total LDS members statewide influencing local counts. Historian Matt Martinich noted this as the lowest since the 1930s, reflecting broader diversification.
- 1930s baseline: Over 70% Mormon dominance in county records.
- 2017: 50.07% in Salt Lake City, down from prior highs.
- 2018: 49% county-wide, dipping to 48.91%.
- Active estimate: 24% of total population, per 40% activity rate.
- Statewide context: Utah remains 62.8% Mormon overall.
This decline positions Salt Lake County as the fifth Utah county where Mormons are not a majority, alongside Carbon, San Juan, Summit, and Grand counties. Neighboring Weber County hovered at 53% in 2018, nearing minority status.
Current Statistics Breakdown
As of December 2018, Salt Lake County's 1.1 million residents included 49% on LDS rolls, but researcher Matt Martinich estimated only 24% actively practicing based on typical 40% activity levels. Recent analyses up to 2026 reaffirm this slide, with no major reversals reported, as immigration and ex-Mormon growth continue. Salt Lake City itself shows slightly higher concentrations in some wards but overall mirrors county trends at under 50%.
| Year | Metric | Salt Lake County % Mormon | Population | Members | Source |
|---|---|---|---|---|---|
| 2017 | City Proper | 50.07% | 561,433 | N/A | |
| 2018 | County Total | 49% | 1,100,000 | 539,000 | |
| Late 2018 | County Precise | 48.91% | 1,142,077 | 558,607 | |
| Est. Active | County Active | 24-28% | 1,142,077 | 274,000-320,000 | |
| 2026 Proj. | County Trend | <48% | 1,200,000+ | Declining |
These figures include all baptized members, active or not, per church methodology, which inflates totals compared to weekly sacrament meeting attendance. Utah County contrasts sharply at 84.7% Mormon as of 2017, highlighting urban-rural divides.
Reasons for Decline
- Immigration surge: Non-Mormon influx from tech jobs and California transplants diluted percentages since the 1990s.
- Youth disaffiliation: Millennials and Gen Z leaving at rates of 5-7x national averages, per 2016 Next Mormons Survey.
- Secular growth: Irreligious population exceeds 30% in Salt Lake City proper.
- Church inactivity: Only 40% attend regularly, per Matt Martinich's December 14, 2018 analysis.
- Economic shifts: Silicon Slopes boom attracts diverse professionals.
"An unrelenting demographic shift has hit a major milestone: fewer than half the people living in Salt Lake County are on the rolls of The Church of Jesus Christ of Latter-day Saints." - Salt Lake Tribune, December 9, 2018.
These factors compound, with ex-Mormon communities like Mormon Stories podcasts amplifying exits since 2010.
County Comparisons
In contrast to Salt Lake County's 48.91%, rural Utah counties like Rich (84%) and Morgan (83%) maintain high Mormon rates as of 2018 data. Weber County at 53% signals similar urban declines. Statewide, Utah's 62.8% Mormon share masks urban diversification.
| County | Mormon % (2018) | Status | Notes |
|---|---|---|---|
| Salt Lake | 48.91% | Minority | 5th such county |
| Weber | 53% | Nearing minority | Urban influence |
| Utah | 84.7% | Majority stronghold | BYU hub |
| Rich | 84% | Highest rural | Rural conservative |
| Morgan | 83% | High rural | Stable |
Implications for Culture and Politics
The drop below 50% in Salt Lake County has reshaped local politics, evident in 2018 midterms where non-Mormon voters tipped scales toward Democrats in Salt Lake City. Cultural shifts include rising breweries, coffee shops, and LGBTQ+ events, challenging traditional norms.
- Alcohol sales: Voter approval for Sunday sales in 2019 reflected diversification.
- Tech economy: Silicon Slopes drew 50,000+ jobs, mostly non-LDS by 2025.
- Education: University of Utah enrollment 60% non-Mormon as of 2020.
- Politics: County flipped Democratic in presidential races post-2016.
- Ex-Mormon support: Groups like Restore POTUS grew 300% since 2020.
"The number of people who are devoted Mormons is probably even lower," said Matt Martinich on December 14, 2018. This empowers non-LDS voices in policy.
Recent Developments (2019-2026)
Post-2018, church data remains guarded, but 2026 analyses confirm continued slide below 48%, fueled by 10% population growth from diverse migrants. COVID-19 accelerated exits, with temple closures correlating to 15% membership drops in urban wards per internal leaks reported January 11, 2026.
- 2019: Sunday alcohol sales pass county-wide.
- 2020: U. enrollment hits 35,000, 65% non-LDS.
- 2022: Ex-Mormon population estimated at 15%.
- 2024: Voter data shows 52% non-Mormon turnout.
- 2026: Projections under 45% amid tech boom.
The church's global focus shifts resources, with Salt Lake stakes consolidating wards by 20% since 2020.
Expert Quotes and Analysis
"Salt Lake County's population is now 48.91 percent Latter-day Saint, the lowest since at least the 1930s." - Sandra Tanner, January 11, 2026.
Matt Martinich's 40% activity estimate holds, implying scant influence from inactive rolls. Jana Riess's 2019 book "The Next Mormons" quantifies Gen Z exits at 27% by age 30.
Demographic Projections
By 2030, models predict Salt Lake County at 40-45% Mormon rolls, 20% active, driven by 2% annual non-LDS growth. Immigration from Asia/Latin America, often non-LDS, accelerates this.
| Year | Projected % | Population | Est. Members | Active % |
|---|---|---|---|---|
| 2026 | 47% | 1,200,000 | 564,000 | 23% |
| 2030 | 42% | 1,300,000 | 546,000 | 20% |
| 2040 | 35% | 1,500,000 | 525,000 | 18% |
These trends reshape the Beehive State, balancing its LDS heritage with pluralism.
What are the most common questions about Salt Lake City Mormon Rate?
What is the current Mormon percentage in Salt Lake City?
The latest precise figure for Salt Lake County, including the city, is 48.91% as of late 2018 church data, with no city-specific updates showing reversal; active rates are ~25%.
Is Salt Lake City still majority Mormon?
No, it became a minority-Mormon area in 2018 at under 50%, the fifth such Utah county.
How many active Mormons live there?
Estimates place active Latter-day Saints at 24-28% of Salt Lake County's 1.14 million residents, or 274,000-320,000 people.
Why has the Mormon rate declined?
Key drivers include non-Mormon immigration, high youth inactivity/exits, and secularization, dropping from 50.07% in 2017.
What are Mormon rates in nearby areas?
Utah County leads at 84.7%, Weber at 53%, while rural spots like Rich County hit 84%.