28,340 people (2024 Census estimate, −12.3% since 2020)
4,541 square miles of land · 6 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.
15 active community water systems list Lassen County in the area they serve, reporting 17,191 people served in all (a system that crosses county lines counts its whole population).
| CITY OF SUSANVILLE groundwater · local government · CA1810001 | 7,811 served |
| CDCR-HIGH DESERT STATE PRISON groundwater · state · CA1805004 | 3,857 served |
| WESTWOOD C.S.D. groundwater · local government · CA1810002 | 1,662 served |
| LEAVITT LAKE CSD groundwater · local government · CA1810004 | 950 served |
| HERLONG PUBLIC UTILITY DISTRICT groundwater · local government · CA1805007 | 831 served |
| LAKE FOREST MUTUAL W.C. groundwater · private · CA1800511 | 565 served |
| LASSEN COUNTY WATER WORKS DISTRICT #1 groundwater · local government · CA1810003 | 450 served |
| CLEAR CREEK CSD-WESTWOOD groundwater · local government · CA1800512 | 400 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 77 people were held in Lassen County's jail, in Vera's latest figure (2025). In 2020 it was about 102.
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.
11 school districts have their office in Lassen County. School taxes are usually the largest part of a property tax bill.
Spent $14.8 million — $14.1 million to run schools, about $13,520 per student, plus $97,000 on buildings and equipment. Money in: $3.9 million local (mostly property tax), $13.8 million state, $2.3 million federal. Long-term debt: $8.8 million.
Spent $13.6 million — $13 million to run schools, about $15,065 per student, plus $462,000 on buildings and equipment. Money in: $5.3 million local (mostly property tax), $9.2 million state, $1.2 million federal.
Spent $5.2 million — $4.9 million to run schools, about $15,708 per student, plus $249,000 on buildings and equipment. Money in: $793,000 local (mostly property tax), $5.1 million state, $803,000 federal. Long-term debt: $105,000.
Spent $4.8 million — $4.7 million to run schools, about $19,060 per student, plus $56,000 on buildings and equipment. Money in: $1.6 million local (mostly property tax), $3.6 million state, $1.3 million federal.
Spent $3.6 million — $3.1 million to run schools, about $15,014 per student, plus $410,000 on buildings and equipment. Money in: $853,000 local (mostly property tax), $3 million state, $685,000 federal.
Spent $2.6 million — $2.6 million to run schools, about $13,116 per student, plus $25,000 on buildings and equipment. Money in: $550,000 local (mostly property tax), $2.9 million state, $308,000 federal.
Spent $2.6 million — $2.5 million to run schools, about $12,942 per student, plus $96,000 on buildings and equipment. Money in: $469,000 local (mostly property tax), $2.5 million state, $124,000 federal.
Spent $3.5 million — $3.4 million to run schools, about $19,425 per student, plus $92,000 on buildings and equipment. Money in: $992,000 local (mostly property tax), $2.8 million state, $597,000 federal. Long-term debt: $90,000.
And 3 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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Lassen County about $25.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
108 bridges in Lassen County: 28 in good condition, 72 fair, and 8 poor (7.4%). “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.
| CR A21 / MOONEY RD over ROBBERS CREEK · built 1975 | 1,500 vehicles a day |
| CR417 (PUNKIN CTR) over MUDDY SLOUGH NO 1 · built 1955 | 200 vehicles a day |
| CR 305 (MAPES RD) over WHITEHEAD SLOUGH · built 1978 | 162 vehicles a day |
| RD 424 (BASSETT) over WILLOW CREEK · built 1960 | 120 vehicles a day |
| RD 304 over WHITEHEAD SLOUGH · built 1930 | 100 vehicles a day |
| CR246 (BELFAST RD) over WILLOW CREEK · built 1975 | 100 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 Lassen County in fiscal 2025, about $1,412 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 Lassen 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 Lassen County built: brayden.ozark@gmail.com.
More of California: the state government and every county in California.
Nearby counties: Washoe County, NV (50 mi) · Plumas County (51 mi) · Modoc County (61 mi) · Shasta County (74 mi) · Sierra County (79 mi) · Butte County (89 mi).