Overview
Salt Lake County is home to 1,184,689 people (Census ACS 5-Year, 2023), making it the most populous county in Utah and larger than 99% of all U.S. counties. It contains Salt Lake City, the state capital, and sits in a valley between the Wasatch Range to the east and the Oquirrh Mountains to the west.
The county's median household income of $94,658 (Census ACS 5-Year, 2023) ranks higher than 94% of U.S. counties and sits in the upper quarter among Utah's 29 counties. Its median home value of $484,500 (Census ACS 5-Year, 2023) exceeds that of 96% of counties nationally. At 33.8 years, the median age is younger than 94% of U.S. counties (Census ACS 5-Year, 2023), reflecting a population skewed heavily toward working-age adults and young families.
The labor force tops 700,000 (BLS LAUS, 2025). Total bank deposits exceed $802 billion (FDIC, 2023). By most economic measures, Salt Lake County operates at a scale that dwarfs the rest of the state and competes with major metro counties across the country.
Demographics
Salt Lake County is young. That 33.8-year median age (Census ACS 5-Year, 2023) places it below 94% of U.S. counties and in the lower half within Utah, a state already known for its youthful population. Large family sizes, driven partly by the region's cultural and religious demographics, help keep that number low.
Educational attainment runs high: 38.6% of adults 25 and older hold a bachelor's degree or higher (Census ACS 5-Year, 2023), ranking above 91% of U.S. counties. That rate exceeds the national average of roughly 33% and reflects the county's concentration of professional and tech-sector employment.
The racial composition breaks down as 67.9% white, 20.0% Hispanic or Latino, 4.1% Asian, 1.7% Black, and 0.5% Native American (Census ACS 5-Year, 2023). Within Utah, Salt Lake County is among the most diverse: its Hispanic population ranks higher than 97% of the state's counties, and its Asian population does the same. The white share, at 67.9%, falls below 97% of Utah counties. For a state often perceived as demographically homogeneous, Salt Lake County is the clear outlier.
Education
Salt Lake County's public schools enrolled 216,123 students (Education Data Portal, 2021), a figure larger than 99% of U.S. counties. The student-teacher ratio of 21.4:1 (Education Data Portal, 2021) runs well above the national average of roughly 15.5:1, placing it higher than 98% of counties. Classrooms here are crowded by national standards.
Per-pupil spending was $11,442 (Education Data Portal, 2020), which falls below the national average of approximately $15,000 and ranks lower than 89% of U.S. counties. Utah consistently ranks among the lowest states in per-pupil funding, and Salt Lake County reflects that pattern. The combination of large class sizes and below-average spending per student is a pressure point for the district.
The graduation rate was 84.7% (Education Data Portal, 2019), slightly below the national average of about 87% and lower than roughly 65% of U.S. counties. Within Utah, it falls in the lower third. For a county with high educational attainment among adults, that gap between adult degree-holding and K-12 completion rates suggests college-educated residents may be arriving from elsewhere rather than being produced entirely by local schools.
Economy & Employment
The labor force reached 700,176 in early 2025, with 676,210 employed and 23,966 unemployed (BLS LAUS, 2025). The unemployment rate of 3.4% sits below the national average and lower than 64% of U.S. counties. Employment is broad-based, with the county serving as Utah's economic center.
Median household income of $94,658 (Census ACS 5-Year, 2023) runs higher than 94% of U.S. counties. Per capita income is $43,393 (Census ACS 5-Year, 2023), above 87% nationally. IRS data from tax year 2021 shows 560,660 returns filed with an average adjusted gross income of $97,342 and average total income of $98,048 (IRS SOI, 2021). Total AGI across the county topped $54.5 billion.
The poverty rate is 8.2% (Census ACS 5-Year, 2023), lower than 86% of U.S. counties. That's a solid number, though it still means roughly 97,000 residents live below the poverty line in absolute terms. In a county with near-six-figure median household income, the gap between top earners and those in poverty is worth noting.
Average commute time is 18.4 minutes (Census ACS 5-Year, 2023), shorter than 81% of U.S. counties. Workers here spend less time in transit than most Americans, a factor that can affect both quality of life and the effective value of wages earned.
Housing & Cost of Living
Salt Lake County's housing market has grown expensive relative to most of the country. The median home value of $484,500 (Census ACS 5-Year, 2023) ranks above 96% of U.S. counties and sits in the top fifth within Utah. Median gross rent is $1,493 per month (Census ACS 5-Year, 2023), higher than 94% of counties nationally.
HUD's fair market rent estimates for 2026 show what landlords can expect to charge: $1,259 for a studio, $1,456 for a one-bedroom, $1,747 for a two-bedroom, $2,333 for a three-bedroom, and $2,666 for a four-bedroom (HUD FMR, 2026). All of these figures rank above 90% of U.S. counties. A family renting a three-bedroom apartment at fair market rates would spend $27,996 per year, roughly 30% of the county's median household income. That's right at the federal threshold for housing cost burden.
The county has 440,166 total housing units, with 23,577 vacant (Census ACS 5-Year, 2023). The vacancy rate of 5.4% is lower than 94% of U.S. counties, indicating a tight market. Low vacancy combined with high demand from a growing population keeps upward pressure on both rents and home prices. The affordability math is getting harder for residents earning below the median.
Health & Wellness
Salt Lake County's health data shows a mixed picture. On several measures, residents fare better than most of the country. The obesity rate of 29.9% (CDC PLACES, 2023) is lower than 94% of U.S. counties. Diabetes prevalence of 8.7% (CDC PLACES, 2023) falls below 90% of counties nationally. High blood pressure affects 28.1% of adults (CDC PLACES, 2023), a rate lower than 92% of U.S. counties.
Physical health is relatively strong: 12.6% of adults reported 14 or more days of poor physical health in the past month (CDC PLACES, 2023), better than roughly 72% of counties.
Mental health tells a different story. Depression prevalence is 27.5% (CDC PLACES, 2023), higher than 84% of U.S. counties. Poor mental health days affect 17.2% of adults (CDC PLACES, 2023). Utah broadly reports elevated depression and mental health challenges compared to national figures, and Salt Lake County fits that pattern. The gap between physical and mental health outcomes is one of the county's more striking contrasts.
Preventive care access is moderate. Cholesterol screening reaches 82.2% of adults (CDC PLACES, 2023), and 69.7% had an annual checkup (CDC PLACES, 2023), both in the lower range nationally. The uninsured rate of 11.5% (CDC PLACES, 2023) is higher than 60% of U.S. counties, meaning roughly 136,000 residents lack health coverage. That number limits access to both preventive and acute care.
Climate & Natural Disasters
Salt Lake County gets 141.1 inches of snow a year (NOAA Climate Data Online, 2025), more than 99% of U.S. counties. That's not a rounding error. The Wasatch Range catches and concentrates winter storms in ways that make the annual average temperature of 46.3°F feel misleading on its own.
Average highs reach 56.4°F and lows drop to 36.2°F (NOAA Climate Data Online, 2025), both placing the county in roughly the bottom fifth nationally for warmth. Summers are real, but the climate's defining feature is winter, and the snow totals here are what drive that.
Precipitation runs 24.6 inches annually (NOAA Climate Data Online, 2025), lower than 80% of U.S. counties. It's not wet. Most of that moisture falls as snow.
The county has 11 federal disaster declarations on record, going back to 1983 (FEMA OpenFEMA, 2026). The list covers floods, wildfires, an earthquake in 2020, severe storms, and a tornado in 1999. Wildfires account for three of the declarations. Floods account for three more. The most recent was a wildfire declaration in August 2021.
That spread matters. Salt Lake County's hazard profile isn't dominated by a single threat type. Residents should account for wildfire risk in drier seasons, flood risk from spring snowmelt, and seismic exposure from the Wasatch Fault, which runs directly under the metro area. The 2020 earthquake, a 5.7 magnitude event centered near Magna, triggered the most recent seismic declaration.
As the region grows and development presses further into the urban-wildland interface, wildfire exposure in particular is likely to increase.
Financial Profile
IRS data shows 560,660 tax returns filed from Salt Lake County in tax year 2021, with total adjusted gross income of $54.6 billion and total income of nearly $55 billion (IRS SOI, 2021). Average AGI of $97,342 and average income of $98,048 both rank above 93% of U.S. counties. The county generates outsized tax revenue relative to its population.
Banking access is extensive. The FDIC counted 465 bank branches in the county as of 2023, with total deposits of $802.2 billion (FDIC, 2023). That deposit figure ranks at the very top nationally, reflecting Salt Lake City's role as a regional banking hub. Several major financial institutions maintain significant operations in the area.
Social Security beneficiaries totaled 159,765 (SSA, 2024), ranking above 98% of U.S. counties by volume. Given the county's young median age, the ratio of beneficiaries to total population (roughly 13.5%) is lower than in older counties, meaning the working-age population supports a comparatively smaller retiree base. That's a favorable dependency ratio for now, though it will shift as the population ages.
Key Comparisons
Salt Lake County consistently ranks in the top tier nationally across economic and demographic measures, but the picture isn't uniformly strong.
Where Salt Lake County stands out: population (99th among U.S. counties), median household income (94th), educational attainment (91st), home values (96th), and labor force size (99th). Its young median age (lower than 94% of counties) and low obesity rate (lower than 94%) set it apart from national trends.
Where it lags: per-pupil education spending (lower than 89% nationally), graduation rates (lower than 65%), annual checkup rates (lower than 91%), and depression prevalence (higher than 84%). The student-teacher ratio of 21.4:1 is higher than 98% of U.S. counties, reflecting Utah's chronic school funding challenges.
Within Utah, the county carries the state's largest population and economic base but doesn't always lead on per-capita measures. Its median household income ranks in the upper quarter of Utah counties but not at the very top. Summit County and other affluent Wasatch Front communities pull ahead on income metrics.
The core tension: Salt Lake County has strong employment, high incomes, and a young workforce. But housing costs rank among the highest in the state, education spending lags far behind national peers, mental health outcomes are worse than the physical health numbers would predict, and more than one in ten residents lacks health insurance. The fundamentals are strong. The pressure points are real.
Data Sources
- Census ACS 5-Year (2023): Population, income, home values, rent, housing units, vacancy, demographics, education attainment, poverty, commute time
- BLS LAUS (2025): Unemployment rate, employment, labor force
- CDC PLACES (2023): Health metrics including obesity, diabetes, blood pressure, mental health, depression, insurance status, preventive care
- HUD Fair Market Rents (2026): Fair market rent estimates by bedroom count
- FEMA OpenFEMA (2026): Disaster declarations and history
- IRS Statistics of Income (2021): Tax returns, adjusted gross income, total income
- FDIC Summary of Deposits (2023): Bank branch count, total deposits
- NOAA Climate Data Online (2025): Temperature, precipitation, snowfall
- SSA OASDI (2024): Social Security beneficiaries
- Education Data Portal (2019, 2020, 2021): Per-pupil spending, enrollment, student-teacher ratio, graduation rate