1,080,149 people (2024 Census estimate, +3.3% since 2020)
9,189 square miles of land · 118 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.
142 active community water systems list Pima County in the area they serve, reporting 1,064,305 people served in all (a system that crosses county lines counts its whole population).
| TUCSON CITY OF groundwater · local government · AZ0410112 | 732,906 served |
| METROPOLITAN DWID groundwater · private · AZ0410076 | 45,570 served |
| ORO VALLEY WATER UTILITY groundwater · local government · AZ0410164 | 42,316 served |
| COMMUNITY WC OF GREEN VALLEY groundwater · public/private · AZ0410004 | 22,085 served |
| USAF DAVIS MONTHAN AFB groundwater · federal · AZ0420549 | 18,640 served |
| SAHUARITA WATER COMPANY groundwater · public/private · AZ0410312 | 18,178 served |
| VAIL WATER COMPANY groundwater · private · AZ0410041 | 17,500 served |
| FLOWING WELLS IRRIGATION DISTRICT groundwater · private · AZ0410051 | 16,000 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 1,599 people were held in Pima County's jail, in Vera's latest figure (2024), or 241 per 100,000 residents ages 15–64. In 2019 it was about 1,853.
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 Pima County. School taxes are usually the largest part of a property tax bill.
Spent $640.6 million — $557.5 million to run schools, about $13,431 per student, plus $66.5 million on buildings and equipment. Money in: $219.4 million local (mostly property tax), $240.9 million state, $207.8 million federal. Long-term debt: $88.3 million.
Spent $170.2 million — $145.4 million to run schools, about $9,997 per student, plus $21 million on buildings and equipment. Money in: $28 million local (mostly property tax), $108.8 million state, $58.7 million federal. Long-term debt: $53.3 million.
Spent $175.2 million — $144.2 million to run schools, about $9,924 per student, plus $17.5 million on buildings and equipment. Money in: $56.9 million local (mostly property tax), $107.7 million state, $19.1 million federal. Long-term debt: $89.5 million.
Spent $155.2 million — $134.9 million to run schools, about $10,517 per student, plus $8.6 million on buildings and equipment. Money in: $63.6 million local (mostly property tax), $85.5 million state, $14.7 million federal. Long-term debt: $137.8 million.
Spent $174.6 million — $144.8 million to run schools, about $12,028 per student, plus $24.1 million on buildings and equipment. Money in: $90.3 million local (mostly property tax), $57.2 million state, $32.4 million federal. Long-term debt: $70.8 million.
Spent $62.6 million — $55.7 million to run schools, about $8,599 per student, plus $4.4 million on buildings and equipment. Money in: $34.1 million local (mostly property tax), $39.7 million state, $6.6 million federal. Long-term debt: $34.9 million.
Spent $70.2 million — $56.5 million to run schools, about $10,445 per student, plus $11.5 million on buildings and equipment. Money in: $18.5 million local (mostly property tax), $36.8 million state, $16 million federal. Long-term debt: $28 million.
Spent $61.2 million — $50.9 million to run schools, about $9,682 per student, plus $5 million on buildings and equipment. Money in: $38.9 million local (mostly property tax), $23.9 million state, $6.4 million federal. Long-term debt: $30 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 High compared with other U.S. counties. FEMA estimates natural hazards cost Pima County about $531.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
1,154 bridges in Pima County: 782 in good condition, 361 fair, and 11 poor (1.0%). “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.
| I 10; WB over FAS 317; Cortero Rd · built 1966 | 56,965 vehicles a day |
| 22nd Street over SPRR; Aviation Hwy · built 1966 | 39,799 vehicles a day |
| Trico Road over Brawley Wash · built 1960 | 3,531 vehicles a day |
| Trico-Marana Road over Santa Cruz River · built 1959 | 2,718 vehicles a day |
| Madera Canyon Rd over Medium Wash · built 1935 | 1,200 vehicles a day |
| Madera Canyon Rd over Florida Canyon Wash · built 1935 | 1,200 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $932.7 million of work in Pima County in fiscal 2025, about $894 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. Last day to register to vote: 2026-10-05. Early voting: 2026-10-07 to 2026-10-30. Last day to request a ballot by mail: 2026-10-23. Last suggested day to mail your ballot back: 2026-10-27. Election Day: 2026-11-03.
Source: Arizona Secretary of State, Sept. 4, 2026 · Arizona Secretary of State — 2025–2026 master elections calendar (PDF) · Arizona Secretary of State — election calendar
The budget, property tax rates, audits, local officials and offices for Pima 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 Pima County built: brayden.ozark@gmail.com.
More of Arizona: the state government and every county in Arizona.
Nearby counties: Pinal County (60 mi) · Santa Cruz County (69 mi) · Maricopa County (94 mi) · Cochise County (119 mi) · Graham County (124 mi) · Gila County (128 mi).