Salt Lake County vs Utah County
Two neighbouring counties in Utah, compared on population, size, income and housing. They share 46 mi of border.
Salt Lake County
Utah
Utah County
Utah
Both outlines are drawn at true relative size. Utah County spans about 108.4 km at its widest.
Side by side
| Measure | Salt Lake County | Difference | Utah County |
|---|---|---|---|
| Population | 1,220,916 | +60.7% | 759,859 |
| Change since 2020 | 2.9% | -11.6 pp | 14.5% |
| Land area | 752.9 sq mi | -62.4% | 2,004 sq mi |
| Population density | 1,622 per sq mi | +328.0% | 379 per sq mi |
| Median household income | $97,494 | -3.2% | $100,671 |
| Median home value | $525,700 | -2.4% | $538,700 |
| Median age | 34.0 | +31.8% | 25.8 |
| Households | 426,245 | +110.0% | 203,018 |
| Housing units | 449,662 | +113.0% | 211,066 |
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026; US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. The difference column is computed here: the first county's figure against the second, expressed as a percentage of the second. The change-since-2020 row is the exception: two growth rates differ in percentage points (pp), not percent. Retrieved 30 August 2026.
What the numbers say
- Salt Lake County holds about 1.6 times the population of Utah County: 1,220,916 against 759,859.
- Utah County covers more ground, at 2,004 square miles against 752.9.
- Salt Lake County is the more crowded of the two, at 1,622 people per square mile against 379.
- Median household income is higher in Utah County, by 3,177 dollars a year.
- Since 2020, Salt Lake County has grown by 2.9% and Utah County has grown by 14.5%.
- They share 46 mi of common border, which the Census Bureau publishes in its county adjacency file and which almost no other county reference presents.
Full pages
Want a different pair? Compare any two of the 3,144 US counties.
Rebuilt from source data 30 August 2026. How these figures are produced.