7,775 people (2024 Census estimate, +8.3% since 2020)
2,854 square miles of land · 3 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.
7 active community water systems list Crook County in the area they serve, reporting 3,409 people served in all (a system that crosses county lines counts its whole population).
| SUNDANCE, CITY OF groundwater · local government · WY5600055 | 1,279 served |
| MOORCROFT, TOWN OF groundwater · local government · WY5600037 | 1,009 served |
| PINE HAVEN, TOWN OF groundwater · local government · WY5600191 | 498 served |
| HULETT, TOWN OF groundwater · local government · WY5600026 | 420 served |
| VISTA WEST IMPROVEMENT & SERV DISTRICT groundwater · private · WY5600246 | 120 served |
| BEULAH LAND WATER groundwater · private · WY5601692 | 50 served |
| BUCKMILLER ENTERPRISES, LLC groundwater · private · WY5601695 | 33 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 6 people were held in Crook County's jail, in Vera's latest figure (2024), or 140 per 100,000 residents ages 15–64. In 2019 it was about 10.
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 Crook County. School taxes are usually the largest part of a property tax bill.
Spent $28.1 million — $24.9 million to run schools, about $20,131 per student, plus $2.9 million on buildings and equipment. Money in: $12.1 million local (mostly property tax), $12 million state, $2 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 Crook County about $6.3 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very Low; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
176 bridges in Crook County: 52 in good condition, 120 fair, and 4 poor (2.3%). “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 WBL over US 14 · built 1966 | 1,938 vehicles a day |
| Cr Cnty Rd 129 over I-90 · built 1977 | 133 vehicles a day |
| Cr Cnty Rd 93 over Inyan Kara Creek · built 1955 | 41 vehicles a day |
| Cr Cnty Rd 112 over Donkey Creek · built 1980 | 24 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.3 million of work in Crook County in fiscal 2025, about $181 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 Crook 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 Crook County built: brayden.ozark@gmail.com.
More of Wyoming: the state government and every county in Wyoming.
Nearby counties: Lawrence County, SD (41 mi) · Weston County (51 mi) · Campbell County (54 mi) · Butte County, SD (56 mi) · Carter County, MT (64 mi) · Powder River County, MT (75 mi).