104,717 people (2024 Census estimate, +5.3% since 2020)
2,680 square miles of land · 39 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.
81 active community water systems list Grant County in the area they serve, reporting 90,237 people served in all (a system that crosses county lines counts its whole population).
| MOSES LAKE CITY OF groundwater · local government · WA5356300 | 32,428 served |
| EPHRATA WATER DEPARTMENT groundwater · local government · WA5323650 | 8,718 served |
| QUINCY WATER DEPARTMENT CITY OF groundwater · local government · WA5370450 | 8,415 served |
| Mattawa City of groundwater · local government · WA5352000 | 5,370 served |
| WARDEN CITY OF groundwater · local government · WA5392850 | 4,674 served |
| ROYAL CITY WATER groundwater · local government · WA5374700 | 3,389 served |
| DESERT AIRE OWNER ASSN groundwater · private · WA5319056 | 2,856 served |
| SOAP LAKE WATER DEPT groundwater · local government · WA5381300 | 2,399 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 96 people were held in Grant County's jail, in Vera's latest figure (2021), or 154 per 100,000 residents ages 15–64. In 2016 it was about 188.
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.
9 school districts have their office in Grant County. School taxes are usually the largest part of a property tax bill.
Spent $168.6 million — $152.3 million to run schools, about $17,536 per student, plus $10.8 million on buildings and equipment. Money in: $17.3 million local (mostly property tax), $133.5 million state, $22 million federal. Long-term debt: $90.3 million.
Spent $65.4 million — $59.3 million to run schools, about $19,223 per student, plus $2.2 million on buildings and equipment. Money in: $19 million local (mostly property tax), $40.9 million state, $9.5 million federal. Long-term debt: $87 million.
Spent $54 million — $40.5 million to run schools, about $14,422 per student, plus $10.9 million on buildings and equipment. Money in: $6 million local (mostly property tax), $46.4 million state, $4.5 million federal. Long-term debt: $22.7 million.
Spent $52.6 million — $48.2 million to run schools, about $19,002 per student, plus $2.3 million on buildings and equipment. Money in: $3.2 million local (mostly property tax), $36.2 million state, $12.2 million federal.
Spent $37 million — $29.7 million to run schools, about $16,834 per student, plus $6.1 million on buildings and equipment. Money in: $3.5 million local (mostly property tax), $27.3 million state, $4.2 million federal. Long-term debt: $19 million.
Spent $18.1 million — $15.9 million to run schools, about $17,642 per student, plus $2 million on buildings and equipment. Money in: $1.7 million local (mostly property tax), $12.2 million state, $3.7 million federal.
Spent $11.7 million — $10.3 million to run schools, about $20,010 per student, plus $1.2 million on buildings and equipment. Money in: $1.1 million local (mostly property tax), $8.2 million state, $2.1 million federal.
Spent $4.4 million — $4.1 million to run schools, about $25,238 per student, plus $144,000 on buildings and equipment. Money in: $642,000 local (mostly property tax), $3.6 million state, $434,000 federal.
And 1 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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Grant County about $29 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very Low; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
304 bridges in Grant County: 195 in good condition, 100 fair, and 9 poor (3.0%). “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-90 over WEST CANAL · built 1964 | 5,896 vehicles a day |
| I-90 over WEST CANAL · built 1964 | 5,896 vehicles a day |
| HANSEN RD over I-90 · built 1958 | 4,835 vehicles a day |
| M Road SE over EL 29 Waste Way · built 1980 | 2,094 vehicles a day |
| ADAMS RD over I-90 · built 1958 | 1,465 vehicles a day |
| SO. FRONTAGE RD. over WEST CANAL · built 1950 | 687 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $162.9 million of work in Grant County in fiscal 2025, about $1,644 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 Washington 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 Washington: the state government and every county in Washington.
Nearby counties: Douglas County (38 mi) · Adams County (47 mi) · Franklin County (54 mi) · Lincoln County (55 mi) · Kittitas County (57 mi) · Benton County (68 mi).