2,301 people (2024 Census estimate, −6.2% since 2020)
2,626 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.
3 active community water systems list Niobrara County in the area they serve, reporting 1,728 people served in all (a system that crosses county lines counts its whole population).
| LUSK, TOWN OF groundwater · local government · WY5600032 | 1,576 served |
| MANVILLE, TOWN OF groundwater · local government · WY5600110 | 97 served |
| LANCE CREEK WATER DISTRICT groundwater · local government · WY5600109 | 55 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 5 people were held in Niobrara County's jail, in Vera's latest figure (2022), or 392 per 100,000 residents ages 15–64. In 2017 it was about 4.
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 Niobrara County. School taxes are usually the largest part of a property tax bill.
Spent $16.2 million — $15.7 million to run schools, about $18,665 per student, plus $364,000 on buildings and equipment. Money in: $6.4 million local (mostly property tax), $8.7 million state, $1.5 million 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 Niobrara County about $1.8 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.
34 bridges in Niobrara County: 12 in good condition, 21 fair, and 1 poor (2.9%). “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.
| Ni Cnty Rd 9 over Cheyenne River · built 1920 | 3 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $15.6 million of work in Niobrara County in fiscal 2025, about $6,307 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 Wyoming 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 Niobrara 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 Niobrara County built: brayden.ozark@gmail.com.
More of Wyoming: the state government and every county in Wyoming.
Nearby counties: Fall River County, SD (49 mi) · Converse County (54 mi) · Weston County (54 mi) · Sioux County, NE (55 mi) · Custer County, SD (66 mi) · Goshen County (67 mi).