18,834 people (2024 Census estimate, −4.7% since 2020)
2,553 square miles of land · 7 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 Plumas County in the area they serve, reporting 16,636 people served in all (a system that crosses county lines counts its whole population).
| AMERICAN VALLEY CSD groundwater · local government · CA3210004 | 3,778 served |
| CHESTER PUBLIC U.D. groundwater · local government · CA3210009 | 2,187 served |
| CITY OF PORTOLA buys surface water · local government · CA3210003 | 2,100 served |
| HAMILTON BRANCH CSD groundwater · local government · CA3210010 | 1,874 served |
| WEST ALMANOR M.W.C. groundwater · private · CA3210007 | 1,464 served |
| IVCSD-GREENVILLE groundwater · local government · CA3210001 | 795 served |
| GRAEAGLE WATER COMPANY surface water · private · CA3210005 | 737 served |
| GRIZZLY LAKE CSD-DELLEKER groundwater · local government · CA3200104 | 657 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 32 people were held in Plumas County's jail, in Vera's latest figure (2025). In 2020 it was about 43.
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 Plumas County. School taxes are usually the largest part of a property tax bill.
Spent $51.4 million — $35.2 million to run schools, about $20,051 per student, plus $13.9 million on buildings and equipment. Money in: $27.8 million local (mostly property tax), $11.9 million state, $6 million federal. Long-term debt: $51.1 million.
Spent $6.1 million — $4.6 million to run schools, about $506,667 per student, plus $9,000 on buildings and equipment. Money in: $2.5 million local (mostly property tax), $3 million state, $1.7 million federal.
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 Plumas County about $41.1 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
165 bridges in Plumas County: 43 in good condition, 117 fair, and 5 poor (3.0%). “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.
| GULLING STREET over MIDDLE FORK FEATHER RIV · built 1954 | 10,046 vehicles a day |
| ROAD 23N37 over EUREKA CREEK · built 1942 | 50 vehicles a day |
| ACTUALLY RD 28N03 over INDIAN CREEK · built 1965 | 50 vehicles a day |
| ROAD 28N03 over INDIAN CREEK · built 1965 | 50 vehicles a day |
| ROAD 24N28 over SLATE CREEK · built 1956 | 50 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $46.2 million of work in Plumas County in fiscal 2025, about $2,334 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 Plumas 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 Plumas County built: brayden.ozark@gmail.com.
More of California: the state government and every county in California.
Nearby counties: Sierra County (33 mi) · Butte County (47 mi) · Nevada County (48 mi) · Lassen County (51 mi) · Yuba County (57 mi) · Placer County (64 mi).