80,491 people (2024 Census estimate, +0.7% since 2020)
3,215 square miles of land · 25 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.
34 active community water systems list Umatilla County in the area they serve, reporting 62,305 people served in all (a system that crosses county lines counts its whole population).
| HERMISTON, CITY OF groundwater · local government · OR4100372 | 20,000 served |
| PENDLETON, CITY OF surface water · local government · OR4100613 | 16,996 served |
| UMATILLA, CITY OF groundwater · local government · OR4100914 | 8,256 served |
| MILTON-FREEWATER, CITY OF groundwater · local government · OR4100522 | 7,145 served |
| STANFIELD, CITY OF groundwater · local government · OR4100842 | 2,115 served |
| PILOT ROCK, CITY OF groundwater · local government · OR4100626 | 1,326 served |
| ATHENA, CITY OF groundwater · local government · OR4100064 | 1,238 served |
| WESTON, CITY OF groundwater · local government · OR4100949 | 714 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 122 people were held in Umatilla County's jail, in Vera's latest figure (2023), or 240 per 100,000 residents ages 15–64. In 2018 it was about 175.
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.
10 school districts have their office in Umatilla County. School taxes are usually the largest part of a property tax bill.
Spent $117.2 million — $84.9 million to run schools, about $15,541 per student, plus $26 million on buildings and equipment. Money in: $25.8 million local (mostly property tax), $63.8 million state, $8.4 million federal. Long-term debt: $209 million.
Spent $49.5 million — $45.2 million to run schools, about $15,004 per student, plus $746,000 on buildings and equipment. Money in: $12.5 million local (mostly property tax), $33 million state, $6 million federal. Long-term debt: $66.4 million.
Spent $30.9 million — $25.5 million to run schools, about $15,651 per student, plus $3.7 million on buildings and equipment. Money in: $5.2 million local (mostly property tax), $19.8 million state, $5.2 million federal. Long-term debt: $26.4 million.
Spent $25.4 million — $23.8 million to run schools, about $16,747 per student, plus $1.1 million on buildings and equipment. Money in: $6.9 million local (mostly property tax), $15.5 million state, $4 million federal. Long-term debt: $24.5 million.
Spent $11 million — $10.2 million to run schools, about $18,303 per student, plus $672,000 on buildings and equipment. Money in: $2.8 million local (mostly property tax), $7.2 million state, $882,000 federal. Long-term debt: $1.9 million.
Spent $9.2 million — $7.4 million to run schools, about $14,105 per student, plus $893,000 on buildings and equipment. Money in: $2.7 million local (mostly property tax), $6.3 million state, $682,000 federal. Long-term debt: $13.9 million.
Spent $5.6 million — $4.8 million to run schools, about $15,463 per student, plus $262,000 on buildings and equipment. Money in: $1.5 million local (mostly property tax), $4.3 million state, $699,000 federal. Long-term debt: $8.5 million.
Spent $11.8 million — $5.6 million to run schools, about $18,721 per student, plus $5.9 million on buildings and equipment. Money in: $1.5 million local (mostly property tax), $7.8 million state, $424,000 federal. Long-term debt: $11.2 million.
And 2 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Umatilla County about $40 million 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.
321 bridges in Umatilla County: 94 in good condition, 213 fair, and 14 poor (4.4%). “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.
| Stateline Road over Pine Creek · built 1964 | 17,928 vehicles a day |
| OR 207 (HWY 333) over A-LINE CANAL · built 1974 | 4,248 vehicles a day |
| S. EDWARDS ROAD over US FEED CANAL · built 1960 | 1,125 vehicles a day |
| MILTON CEMETERY RD over WALLA WALLA RIVER · built 1961 | 281 vehicles a day |
| I-84 FRONTAGE RD over UPRR AND MEACHAM CRK · built 1925 | 115 vehicles a day |
| Emert Road over HUNT DITCH · built 2006 | 85 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $41.4 million of work in Umatilla County in fiscal 2025, about $517 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.
Registration deadlines, early voting and polling places for Oregon are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Umatilla 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 Umatilla County built: brayden.ozark@gmail.com.
More of Oregon: the state government and every county in Oregon.
Nearby counties: Union County (41 mi) · Morrow County (43 mi) · Walla Walla County, WA (47 mi) · Benton County, WA (58 mi) · Columbia County, WA (63 mi) · Franklin County, WA (66 mi).