43,109 people (2024 Census estimate, +1.5% since 2020)
1,871 square miles of land · 23 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.
27 active community water systems list Summit County in the area they serve, reporting 41,172 people served in all (a system that crosses county lines counts its whole population).
| PARK CITY WATER SYSTEM surface water · local government · UTAH22011 | 8,875 served |
| MOUNTAIN REGIONAL WATER SSD surface water · local government · UTAH22137 | 8,245 served |
| SUMMIT WATER DISTRIBUTION COMPANY buys surface water · private · UTAH22059 | 6,000 served |
| GORGOZA MUTUAL WATER CO groundwater · private · UTAH22030 | 4,326 served |
| KAMAS CITY WATER SYSTEM groundwater · local government · UTAH22007 | 2,200 served |
| OAKLEY TOWN WATER SYSTEM groundwater · local government · UTAH22010 | 1,800 served |
| FRANCIS TOWN WATER SYSTEM groundwater · local government · UTAH22004 | 1,700 served |
| COALVILLE CITY WATER SYSTEM groundwater · local government · UTAH22002 | 1,590 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 68 people were held in Summit County's jail, in Vera's latest figure (2019), or 239 per 100,000 residents ages 15–64. In 2014 it was about 77.
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.
3 school districts have their office in Summit County. School taxes are usually the largest part of a property tax bill.
Spent $142 million — $78.9 million to run schools, about $17,523 per student, plus $30.6 million on buildings and equipment. Money in: $126.7 million local (mostly property tax), $8.4 million state, $3.4 million federal. Long-term debt: $71.3 million.
Spent $29.2 million — $22.7 million to run schools, about $13,207 per student, plus $5 million on buildings and equipment. Money in: $24 million local (mostly property tax), $6 million state, $1.1 million federal.
Spent $18.2 million — $15.3 million to run schools, about $14,559 per student, plus $2.3 million on buildings and equipment. Money in: $12.9 million local (mostly property tax), $5.3 million state, $698,000 federal. Long-term debt: $1.6 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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Summit County about $38.6 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
137 bridges in Summit County: 16 in good condition, 108 fair, and 13 poor (9.5%). “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 ECHO CREEK · built 1967 | 14,685 vehicles a day |
| I-80 (SR-80) WBL over WEBER RIVER · built 2012 | 6,011 vehicles a day |
| SR-32 over SILVER CREEK · built 1980 | 2,990 vehicles a day |
| SR-32 over WEBER RIVER · built 1955 | 1,660 vehicles a day |
| COUNTY ROAD over SMITH AND MOREHOUSE CR · built 1996 | 914 vehicles a day |
| COUNTY ROAD over WEBER RIVER · built 1970 | 252 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $17.6 million of work in Summit County in fiscal 2025, about $414 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 Summit 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 Summit County built: brayden.ozark@gmail.com.
More of Utah: the state government and every county in Utah.
Nearby counties: Morgan County (35 mi) · Uinta County, WY (36 mi) · Wasatch County (38 mi) · Duchesne County (49 mi) · Salt Lake County (52 mi) · Rich County (54 mi).