7,093 people (2024 Census estimate, −1.9% since 2020)
4,528 square miles of land · 2 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.
8 active community water systems list Grant County in the area they serve, reporting 4,277 people served in all (a system that crosses county lines counts its whole population).
| JOHN DAY, CITY OF groundwater · local government · OR4100410 | 1,617 served |
| PRAIRIE CITY groundwater (surface-influenced) · local government · OR4100673 | 841 served |
| CANYON CITY WATER DEPARTMENT groundwater (surface-influenced) · local government · OR4100165 | 666 served |
| MOUNT VERNON, CITY OF groundwater · local government · OR4100546 | 510 served |
| SENECA, CITY OF groundwater · local government · OR4100807 | 200 served |
| LONG CREEK, CITY OF groundwater · local government · OR4100490 | 173 served |
| DAYVILLE, CITY OF groundwater · local government · OR4100253 | 155 served |
| MONUMENT, CITY OF groundwater (surface-influenced) · local government · OR4100541 | 115 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 8 people were held in Grant County's jail, in Vera's latest figure (2023), or 197 per 100,000 residents ages 15–64. In 2018 it was about 15.
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.
5 school districts have their office in Grant County. School taxes are usually the largest part of a property tax bill.
Spent $15.5 million — $14.7 million to run schools, about $13,529 per student, plus $718,000 on buildings and equipment. Money in: $1.1 million local (mostly property tax), $13.7 million state, $895,000 federal. Long-term debt: $1 million.
Spent $13.1 million — $9.9 million to run schools, about $20,960 per student, plus $3.1 million on buildings and equipment. Money in: $2.3 million local (mostly property tax), $8.7 million state, $1.1 million federal. Long-term debt: $2.2 million.
Spent $1.9 million — $1.6 million to run schools, about $26,672 per student, plus $268,000 on buildings and equipment. Money in: $444,000 local (mostly property tax), $1.8 million state, $204,000 federal. Long-term debt: $1.1 million.
Spent $2.2 million — $2 million to run schools, about $33,661 per student, plus $244,000 on buildings and equipment. Money in: $372,000 local (mostly property tax), $1.6 million state, $181,000 federal. Long-term debt: $601,000.
Spent $1.5 million — $1.5 million to run schools, about $57,269 per student, plus $33,000 on buildings and equipment. Money in: $283,000 local (mostly property tax), $1.1 million state, $431,000 federal.
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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Grant County about $7.5 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
145 bridges in Grant County: 69 in good condition, 70 fair, and 6 poor (4.1%). “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.
| NUGGET STREET over CANYON CREEK · built 1972 | 111 vehicles a day |
| 4550000 ROAD over BADGER CREEK · built 1998 | 100 vehicles a day |
| NFSR over BEAR CREEK - CRAB · built 1971 | 80 vehicles a day |
| C57-MORGAN RD over JOHN DAY R(MORGAN BR) · built 1976 | 31 vehicles a day |
| COUNTY RD 18 over LONG CREEK · built 1974 | 21 vehicles a day |
| 2635000 over JOHN DAY RIVER · built 1963 | 20 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.6 million of work in Grant County in fiscal 2025, about $223 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 Grant 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 Grant County built: brayden.ozark@gmail.com.
More of Oregon: the state government and every county in Oregon.
Nearby counties: Wheeler County (53 mi) · Baker County (67 mi) · Morrow County (70 mi) · Crook County (71 mi) · Union County (75 mi) · Umatilla County (77 mi).