1,216,274 people (2024 Census estimate, +2.5% since 2020)
753 square miles of land · 1,616 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
39 active community water systems list Salt Lake County in the area they serve, reporting 1,458,253 people served in all (a system that crosses county lines counts its whole population).
| SALT LAKE CITY WATER SYSTEM surface water · local government · UTAH18026 | 383,612 served |
| GRANGER-HUNTER IMPROVEMENT DISTRICT buys surface water · local government · UTAH18007 | 121,083 served |
| WEST JORDAN CITY WATER SYSTEM buys surface water · local government · UTAH18020 | 117,025 served |
| SANDY CITY WATER SYSTEM buys surface water · local government · UTAH18028 | 99,750 served |
| JORDAN VALLEY WCD surface water · local government · UTAH18027 | 99,335 served |
| SOUTH JORDAN CITY buys surface water · local government · UTAH18023 | 89,704 served |
| TAYLORSVILLE-BENNION ID buys surface water · local government · UTAH18021 | 67,098 served |
| HERRIMAN CITY MUNICIPAL WATER DEPARTMENT buys surface water · local government · UTAH18157 | 60,000 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
About 1,910 people were held in Salt Lake County's jail, in Vera's latest figure (2023), or 238 per 100,000 residents ages 15–64. In 2018 it was about 2,398.
Source: Vera Institute of Justice, Incarceration Trends (built from federal Bureau of Justice Statistics jail surveys). Counties without their own jail, or that share one, may show no figure.
5 school districts have their office in Salt Lake County. School taxes are usually the largest part of a property tax bill.
Spent $821.8 million — $673.2 million to run schools, about $11,000 per student, plus $132.7 million on buildings and equipment. Money in: $332.6 million local (mostly property tax), $370.1 million state, $105.9 million federal. Long-term debt: $231.3 million.
Spent $624.5 million — $561.5 million to run schools, about $9,450 per student, plus $51.5 million on buildings and equipment. Money in: $298.9 million local (mostly property tax), $325.7 million state, $51.8 million federal. Long-term debt: $213.3 million.
Spent $456.6 million — $376.2 million to run schools, about $11,268 per student, plus $57.3 million on buildings and equipment. Money in: $246.9 million local (mostly property tax), $172.7 million state, $35.2 million federal. Long-term debt: $459.9 million.
Spent $332 million — $274.7 million to run schools, about $13,808 per student, plus $43.5 million on buildings and equipment. Money in: $200.1 million local (mostly property tax), $80.8 million state, $46.5 million federal. Long-term debt: $19.4 million.
Spent $71.6 million — $66.2 million to run schools, about $11,273 per student, plus $2.5 million on buildings and equipment. Money in: $39.8 million local (mostly property tax), $30.6 million state, $7.5 million federal. Long-term debt: $27.5 million.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Relatively High compared with other U.S. counties. FEMA estimates natural hazards cost Salt Lake County about $621.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
666 bridges in Salt Lake County: 147 in good condition, 490 fair, and 29 poor (4.4%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
| I-80 (SR-80) over SR-89 (US-89) STATE ST. · built 1966 | 127,090 vehicles a day |
| I-215 (SR-215) WBL over SR-68 REDWOOD ROAD · built 1976 | 102,805 vehicles a day |
| SR-201 (2100 S.ST) over 3200 WEST ST. INT. X-RD. · built 1980 | 99,668 vehicles a day |
| I-215 (SR-215) NBL over SR-173 5400 SO. STREET · built 1976 | 91,400 vehicles a day |
| 10600 SO over EAST JORDAN CANAL · built 1979 | 37,101 vehicles a day |
| 10600 S.ST.FA#2078 over JORDAN AND SALT LAKE C · built 1979 | 27,800 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.6 billion of work in Salt Lake County in fiscal 2025, about $1,359 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
Registration deadlines, early voting and polling places for Utah are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Salt Lake County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Salt Lake County built: brayden.ozark@gmail.com.
More of Utah: the state government and every county in Utah.
Nearby counties: Davis County (29 mi) · Morgan County (34 mi) · Utah County (40 mi) · Weber County (42 mi) · Wasatch County (46 mi) · Summit County (52 mi).