Geography Of Faith: Mormon Share By The Salt Lake City Area
The best available figure for the Salt Lake County area is about 49% Mormon, based on Church membership rolls reported in 2018; that is the most widely cited estimate for the Salt Lake City metro area itself. Because those figures count both active and inactive members, the share of residents who actively practice the faith is lower, with one estimate putting active Latter-day Saints at roughly 24% of the county population.
What the numbers mean
People often use "Salt Lake City area" to mean Salt Lake County, since the city sits at the center of the county and the broader metro area. In that sense, the most credible public figure says Mormons make up just under half of residents, not a supermajority. The commonly cited 49% estimate came from LDS membership data and was reported as the lowest level since at least the 1930s.
If the question is about the city proper rather than the county, the percentage can differ, but county-level data is the most available and most frequently used benchmark in reporting. That is why headlines about Salt Lake often describe the region as becoming more religiously diverse rather than still overwhelmingly Mormon.
Why the figure varies
The answer changes depending on how "Mormon" is defined. Some datasets count everyone on church rolls, including people who no longer attend, while others estimate only active members. That creates a gap between the official membership share and the share of residents who are actually participating in weekly church life.
It also matters whether you mean the city, the county, or the full metro area. Salt Lake County is the standard unit in most reporting, but suburban growth and migration patterns can shift the proportion from one neighborhood to another.
| Measure | Estimated share | What it counts |
|---|---|---|
| Salt Lake County LDS membership | 49% | Church membership rolls, active and inactive members |
| Active Mormon estimate | About 24% | Estimated active members only |
| Utah statewide Mormon share | About 62.8% to 68.6% | Varies by source and method |
Historical context
Salt Lake County has long been the religious center of The Church of Jesus Christ of Latter-day Saints, so its demographic shift has outsized symbolic importance. A county that once strongly reflected the church's local dominance is now much more mixed, especially as non-LDS residents have moved in and younger generations have become less likely to identify with the church. The 49% figure captured that transition clearly.
That shift also explains why local political and cultural debates in the area often look different from those in more heavily LDS parts of Utah such as Utah County. Salt Lake County is still shaped by Mormon history, but it is no longer defined by a single majority faith in the same way it once was.
Practical answer
- Salt Lake County is about 49% Mormon by church membership figures.
- Active participation is much lower, around 24% by one widely cited estimate.
- The city-area figure is usually reported at the county level, not just the city limits.
- The percentage has declined over time as the region has become more religiously diverse.
How to read the headline
For a quick, plain-English answer, the Salt Lake City area is roughly half Mormon if you use county membership data, but substantially less than half if you mean active church members. That distinction is the key to interpreting any report on the region's religious makeup.
"Fewer than half the residents of Salt Lake County belong to the Mormon church," one report summarized, underscoring how the area's religious identity has changed over time.
Bottom line for readers
If you are writing or searching for a simple statistic, use 49% for Salt Lake County membership and note that this is not the same as active observance. If you need a more nuanced reading, describe the region as a historically LDS-centered area that is now religiously mixed, with active Mormon participation well below the membership share.
Everything you need to know about Geography Of Faith Mormon Share By The Salt Lake City Area
Is Salt Lake City itself majority Mormon?
Salt Lake City is not best described by a simple majority label, because the most cited public figures are for Salt Lake County, not the city limits alone. The county-level estimate places LDS membership at about 49%, which means the broader area is no longer a clear majority-Mormon region.
Does 49% mean 49% are active Mormons?
No. The 49% figure refers to people on LDS membership rolls, which includes inactive members, while one estimate places active Latter-day Saints at about 24% of the county population. That is why active church participation is much lower than the headline membership number.
Why do some sources give different percentages?
Different sources use different methods, date ranges, and geographic boundaries. Some report church membership, some estimate religious identity in surveys, and some focus on active participation, so the percentages are not directly interchangeable.
What is the safest one-line answer?
The safest one-line answer is that the Salt Lake City area is about 49% Mormon by Salt Lake County membership data, with active members making up a much smaller share.