9,757,179 people (2024 Census estimate, −2.4% since 2020)
4,060 square miles of land · 2,403 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.
199 active community water systems list Los Angeles County in the area they serve, reporting 10,029,553 people served in all (a system that crosses county lines counts its whole population).
| LOS ANGELES-CITY, DEPT. OF WATER & POWER surface water · local government · CA1910067 | 3,875,566 served |
| LONG BEACH UTILITIES DEPARTMENT buys surface water · local government · CA1910065 | 466,772 served |
| SANTA CLARITA VALLEY WATER AGENCY surface water · private · CA1910240 | 292,014 served |
| GSWC - SOUTHWEST buys surface water · private · CA1910155 | 277,740 served |
| SAN GABRIEL VALLEY WATER CO.-EL MONTE groundwater · private · CA1910039 | 240,000 served |
| LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER buys surface water · local government · CA1910070 | 208,129 served |
| GLENDALE-CITY, WATER DEPT. buys surface water · local government · CA1910043 | 192,212 served |
| SUBURBAN WATER SYSTEMS-SAN JOSE buys surface water · private · CA1910205 | 170,523 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 12,780 people were held in Los Angeles County's jail, in Vera's latest figure (2025). In 2020 it was about 13,994.
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.
82 school districts have their office in Los Angeles County. School taxes are usually the largest part of a property tax bill.
Spent $11.5 billion — $9.7 billion to run schools, about $22,606 per student, plus $1.1 billion on buildings and equipment. Money in: $3.9 billion local (mostly property tax), $8.1 billion state, $2.8 billion federal. Long-term debt: $11.7 billion.
Spent $1.5 billion — $1.2 billion to run schools, about $18,419 per student, plus $149.7 million on buildings and equipment. Money in: $411.3 million local (mostly property tax), $1.1 billion state, $227.4 million federal. Long-term debt: $1.4 billion.
Spent $452 million — $408.6 million to run schools, about $16,709 per student, plus $17.2 million on buildings and equipment. Money in: $154.5 million local (mostly property tax), $301.3 million state, $46.3 million federal. Long-term debt: $450.9 million.
Spent $486.5 million — $405.8 million to run schools, about $18,148 per student, plus $31.7 million on buildings and equipment. Money in: $111.8 million local (mostly property tax), $370.5 million state, $52.2 million federal. Long-term debt: $261 million.
Spent $377.9 million — $351.7 million to run schools, about $15,960 per student, plus $19.1 million on buildings and equipment. Money in: $104.2 million local (mostly property tax), $322.8 million state, $53.4 million federal. Long-term debt: $53.6 million.
Spent $369.1 million — $327.4 million to run schools, about $15,037 per student, plus $10.1 million on buildings and equipment. Money in: $151.7 million local (mostly property tax), $256.7 million state, $30.7 million federal. Long-term debt: $491.5 million.
Spent $541.7 million — $432.9 million to run schools, about $20,239 per student, plus $40.5 million on buildings and equipment. Money in: $144.5 million local (mostly property tax), $425.8 million state, $113.5 million federal. Long-term debt: $382.3 million.
Spent $418 million — $320.4 million to run schools, about $15,249 per student, plus $27.9 million on buildings and equipment. Money in: $140.4 million local (mostly property tax), $298.7 million state, $37.3 million federal. Long-term debt: $457.8 million.
And 74 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: Very High compared with other U.S. counties. FEMA estimates natural hazards cost Los Angeles County about $7.6 billion a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very Low; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
3,549 bridges in Los Angeles County: 2,203 in good condition, 1,252 fair, and 94 poor (2.6%). “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 110 over SLAUSON AVE & BNSF RY · built 1996 | 300,000 vehicles a day |
| U.S. HIGHWAY 101 over KESTER AVE · built 1959 | 293,000 vehicles a day |
| INTERSTATE 405 over VERMONT AVE 190TH ST · built 1962 | 269,000 vehicles a day |
| STATE ROUTE 134 over PACIFIC AVE · built 1967 | 240,000 vehicles a day |
| RTE 110 over TORRANCE BLVD · built 1962 | 218,000 vehicles a day |
| ROUTE 105 & LRT over WRIGHT ROAD · built 1993 | 217,000 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $4.5 billion of work in Los Angeles County in fiscal 2025, about $447 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 Los Angeles 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 Los Angeles County built: brayden.ozark@gmail.com.
More of California: the state government and every county in California.
Nearby counties: Orange County (45 mi) · Ventura County (51 mi) · Kern County (84 mi) · Santa Barbara County (104 mi) · San Diego County (117 mi) · San Bernardino County (127 mi).