433,822 people (2024 Census estimate, +6.9% since 2020)
1,407 square miles of land · 308 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.
52 active community water systems list Placer County in the area they serve, reporting 419,236 people served in all (a system that crosses county lines counts its whole population).
| CITY OF ROSEVILLE surface water · local government · CA3110008 | 165,736 served |
| PLACER CWA - FOOTHILL surface water · local government · CA3110025 | 93,417 served |
| CITY OF LINCOLN buys surface water · local government · CA3110004 | 56,268 served |
| PLACER CWA - AUBURN/BOWMAN surface water · local government · CA3110005 | 27,317 served |
| CAL AM - WEST PLACER buys surface water · private · CA3110150 | 9,547 served |
| NEVADA ID - NORTH AUBURN surface water · local government · CA3110026 | 6,870 served |
| FORESTHILL PUBLIC UTILITY DIST surface water · local government · CA3110003 | 6,811 served |
| TAHOE CITY PUD - MAIN groundwater · local government · CA3110010 | 6,411 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 800 people were held in Placer County's jail, in Vera's latest figure (2025). In 2020 it was about 613.
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.
16 school districts have their office in Placer County. School taxes are usually the largest part of a property tax bill.
Spent $199.2 million — $169.9 million to run schools, about $14,665 per student, plus $26.5 million on buildings and equipment. Money in: $94.9 million local (mostly property tax), $94.2 million state, $15.9 million federal. Long-term debt: $23.7 million.
Spent $187.9 million — $168.7 million to run schools, about $14,786 per student, plus $4.7 million on buildings and equipment. Money in: $96.4 million local (mostly property tax), $121.1 million state, $8.8 million federal. Long-term debt: $126.4 million.
Spent $210.3 million — $169.8 million to run schools, about $16,067 per student, plus $28.1 million on buildings and equipment. Money in: $122.9 million local (mostly property tax), $105.2 million state, $9.7 million federal. Long-term debt: $257.9 million.
Spent $123.8 million — $108.7 million to run schools, about $14,312 per student, plus $2.5 million on buildings and equipment. Money in: $98.2 million local (mostly property tax), $59 million state, $6.1 million federal. Long-term debt: $311.6 million.
Spent $87.4 million — $83.1 million to run schools, about $12,839 per student, plus $2.2 million on buildings and equipment. Money in: $36.3 million local (mostly property tax), $64.2 million state, $6.5 million federal. Long-term debt: $29.1 million.
Spent $95.3 million — $65.9 million to run schools, about $16,433 per student, plus $18.4 million on buildings and equipment. Money in: $54.8 million local (mostly property tax), $36.9 million state, $5.7 million federal. Long-term debt: $99.6 million.
Spent $42.7 million — $41.8 million to run schools, about $13,258 per student, plus $594,000 on buildings and equipment. Money in: $23.5 million local (mostly property tax), $21.1 million state, $1.1 million federal. Long-term debt: $214,000.
Spent $35.7 million — $33.8 million to run schools, about $11,712 per student, plus $944,000 on buildings and equipment. Money in: $20.9 million local (mostly property tax), $21.1 million state, $2.4 million federal. Long-term debt: $1.3 million.
And 8 more.
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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Placer County about $162.6 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.
349 bridges in Placer County: 152 in good condition, 181 fair, and 16 poor (4.6%). “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.
| INTERSTATE 80 over UP RR BNSF RY & AMTRAK · built 1961 | 29,000 vehicles a day |
| INTERSTATE 80 over CARPENTER ROAD · built 1958 | 29,000 vehicles a day |
| INTERSTATE 80 EB over HAMPSHIRE ROCKS S YUBA R · built 1963 | 27,000 vehicles a day |
| INTERSTATE 80 EB over TROY ROAD · built 1959 | 13,500 vehicles a day |
| INTERSTATE 80 EB over KINGVALE ROAD · built 1959 | 13,500 vehicles a day |
| INTERSTATE 80 EB over BLUE CANYON ROAD · built 1959 | 13,500 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $52.8 million of work in Placer County in fiscal 2025, about $131 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.
General election: Tuesday, November 3, 2026. Ballots mailed; drop boxes open: 2026-10-05. Last day to register to vote: 2026-10-19. Early in-person voting: 2026-10-24 to 2026-11-03. Election Day: 2026-11-03. Last day for mailed ballots to arrive: 2026-11-10.
Source: California Secretary of State — Nov. 3, 2026 key dates · California Official Voter Information Guide — dates to remember · California Secretary of State — make a plan to vote
The budget, property tax rates, audits, local officials and offices for Placer 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 Placer County built: brayden.ozark@gmail.com.
More of California: the state government and every county in California.
Nearby counties: Nevada County (16 mi) · El Dorado County (22 mi) · Yuba County (36 mi) · Sierra County (37 mi) · Amador County (43 mi) · Sutter County (53 mi).