911 people (2024 Census estimate, −2.7% since 2020)
890 square miles of land · 1 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.
1 active community water system list Wibaux County in the area they serve, reporting 550 people served in all (a system that crosses county lines counts its whole population).
| WIBAUX TOWN OF groundwater · local government · MT0000361 | 550 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 2 people were held in Wibaux County's jail, in Vera's latest figure (2023), or 373 per 100,000 residents ages 15–64. In 2018 it was about 16.
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.
1 school district has its office in Wibaux County. School taxes are usually the largest part of a property tax bill.
Spent $3.9 million — $3.6 million to run schools, about $23,715 per student, plus $129,000 on buildings and equipment. Money in: $3.4 million local (mostly property tax), $1.4 million state, $259,000 federal. Long-term debt: $3.7 million.
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 Wibaux County about $6.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very Low; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
25 bridges in Wibaux County: 3 in good condition, 21 fair, and 1 poor (4.0%). “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.
| CARLYLE RD E over BEAVER CREEK · built 1960 | 38 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $75,716 of work in Wibaux County in fiscal 2025, about $81 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 Montana 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 Wibaux 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 Wibaux County built: brayden.ozark@gmail.com.
More of Montana: the state government and every county in Montana.
Nearby counties: Golden Valley County, ND (20 mi) · Dawson County (36 mi) · Billings County, ND (43 mi) · Fallon County (45 mi) · Slope County, ND (52 mi) · Richland County (58 mi).