12,777 people (2024 Census estimate, +7.9% since 2020)
3,665 square miles of land · 3 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.
12 active community water systems list Valley County in the area they serve, reporting 7,386 people served in all (a system that crosses county lines counts its whole population).
| MCCALL CITY OF surface water · local government · ID4430033 | 4,423 served |
| CASCADE CITY OF groundwater · local government · ID4430012 | 1,000 served |
| MEADOWS AT WEST MOUNTAIN groundwater · private · ID4430103 | 550 served |
| FIR GROVE ESTATES groundwater · private · ID4430104 | 270 served |
| DAY STAR groundwater · private · ID4430001 | 250 served |
| DONNELLY CITY OF groundwater · local government · ID4430019 | 237 served |
| JUGHANDLE ESTATES groundwater · private · ID4430026 | 200 served |
| BLACKHAWK ON THE RIVER groundwater · private · ID4430105 | 150 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 42 people were held in Valley County's jail, in Vera's latest figure (2019), or 614 per 100,000 residents ages 15–64. In 2014 it was about 26.
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.
2 school districts have their office in Valley County. School taxes are usually the largest part of a property tax bill.
Spent $30 million — $19.2 million to run schools, about $14,097 per student, plus $9.8 million on buildings and equipment. Money in: $9.7 million local (mostly property tax), $11 million state, $2 million federal. Long-term debt: $28.7 million.
Spent $4.3 million — $3.7 million to run schools, about $18,029 per student, plus $563,000 on buildings and equipment. Money in: $1.3 million local (mostly property tax), $2.3 million state, $1.2 million federal. Long-term debt: $1.1 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 Valley County about $19.6 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
153 bridges in Valley County: 72 in good condition, 71 fair, and 10 poor (6.5%). “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.
| SH 55 over UPRR;N.FK.PAYETTE RIVER · built 1933 | 4,100 vehicles a day |
| S3944;FARM TO MRKT over WILLOW CREEK · built 1996 | 490 vehicles a day |
| STC 3988;ROSEBERRY over WILLOW CREEK · built 1996 | 370 vehicles a day |
| PADDY FLAT ROAD over BOULDER CREEK · built 1978 | 230 vehicles a day |
| SMITH FERRY DRIVE over N.FK.PAYETTE RIVER · built 1959 | 90 vehicles a day |
| NISULA ROAD over MUD CREEK · built 1986 | 50 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $4.3 million of work in Valley County in fiscal 2025, about $368 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 Idaho 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 Valley 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 Valley County built: brayden.ozark@gmail.com.
More of Idaho: the state government and every county in Idaho.
Nearby counties: Adams County (41 mi) · Boise County (60 mi) · Washington County (64 mi) · Gem County (67 mi) · Idaho County (69 mi) · Custer County (78 mi).