556,972 people (2024 Census estimate, +0.6% since 2020)
1,496 square miles of land · 372 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.
61 active community water systems list Stanislaus County in the area they serve, reporting 490,351 people served in all (a system that crosses county lines counts its whole population).
| MODESTO, CITY OF buys surface water · local government · CA5010010 | 218,915 served |
| TURLOCK, CITY OF buys surface water · local government · CA5010019 | 72,888 served |
| CERES, CITY OF buys surface water · local government · CA5010028 | 54,513 served |
| RIVERBANK, CITY OF groundwater · local government · CA5010018 | 25,625 served |
| PATTERSON, CITY OF groundwater · local government · CA5010017 | 24,977 served |
| OAKDALE, CITY OF groundwater · local government · CA5010014 | 23,235 served |
| CITY OF MODESTO - SALIDA buys surface water · local government · CA5010005 | 14,576 served |
| CITY OF NEWMAN-WATER DEPARTMENT groundwater · local government · CA5010013 | 12,389 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 1,401 people were held in Stanislaus County's jail, in Vera's latest figure (2025). In 2020 it was about 1,194.
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.
25 school districts have their office in Stanislaus County. School taxes are usually the largest part of a property tax bill.
Spent $645.4 million — $534.1 million to run schools, about $18,028 per student, plus $83.6 million on buildings and equipment. Money in: $121 million local (mostly property tax), $480.3 million state, $88.2 million federal. Long-term debt: $178 million.
Spent $266.3 million — $250.5 million to run schools, about $18,030 per student, plus $9.7 million on buildings and equipment. Money in: $46.1 million local (mostly property tax), $240.5 million state, $32.9 million federal. Long-term debt: $103.9 million.
Spent $257 million — $225.9 million to run schools, about $16,686 per student, plus $21.4 million on buildings and equipment. Money in: $70.3 million local (mostly property tax), $186.3 million state, $33.2 million federal. Long-term debt: $104.6 million.
Spent $131.7 million — $127.8 million to run schools, about $16,034 per student, plus $2.2 million on buildings and equipment. Money in: $28.4 million local (mostly property tax), $105.6 million state, $20.7 million federal. Long-term debt: $44.8 million.
Spent $119 million — $99.9 million to run schools, about $16,177 per student, plus $14.3 million on buildings and equipment. Money in: $34.5 million local (mostly property tax), $95.3 million state, $12.3 million federal. Long-term debt: $94.4 million.
Spent $83.4 million — $77 million to run schools, about $14,736 per student, plus $5 million on buildings and equipment. Money in: $31.7 million local (mostly property tax), $55.8 million state, $6.2 million federal. Long-term debt: $7.8 million.
Spent $61.3 million — $57.3 million to run schools, about $16,898 per student, plus $2.3 million on buildings and equipment. Money in: $17.8 million local (mostly property tax), $48.9 million state, $8.3 million federal. Long-term debt: $18.5 million.
Spent $68.1 million — $56.1 million to run schools, about $17,589 per student, plus $9.4 million on buildings and equipment. Money in: $13.9 million local (mostly property tax), $49 million state, $8.7 million federal. Long-term debt: $35 million.
And 17 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 High compared with other U.S. counties. FEMA estimates natural hazards cost Stanislaus County about $264.9 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
386 bridges in Stanislaus County: 120 in good condition, 214 fair, and 52 poor (13.5%). “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.
| BRIGGSMORE ROAD over UP RR & BRINK AVENUE · built 1976 | 71,797 vehicles a day |
| STATE ROUTE 99 SB over 7TH STREET & UP RR · built 1963 | 52,500 vehicles a day |
| STATE ROUTE 99 NB over TUOLUMNE BLVD · built 1963 | 52,500 vehicles a day |
| MITCHELL ROAD over TUOLUMNE RIVER · built 1958 | 37,377 vehicles a day |
| INTERSTATE 5 SB over HANSON ROAD (PRIVATE) · built 1967 | 20,500 vehicles a day |
| INTERSTATE 5 NB over HANSON ROAD (PRIVATE) · built 1967 | 20,500 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $239.6 million of work in Stanislaus County in fiscal 2025, about $433 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 Stanislaus 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 Stanislaus County built: brayden.ozark@gmail.com.
More of California: the state government and every county in California.
Nearby counties: Merced County (30 mi) · San Joaquin County (30 mi) · Santa Clara County (44 mi) · Calaveras County (50 mi) · Alameda County (50 mi) · Contra Costa County (57 mi).