7,989 people (2024 Census estimate, +0.1% since 2020)
862 square miles of land · 9 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.
5 active community water systems list Traill County in the area they serve, reporting 7,644 people served in all (a system that crosses county lines counts its whole population).
| EAST CENTRAL REGIONAL WD-TRAILL groundwater · private · ND4901071 | 2,800 served |
| MAYVILLE CITY OF buys groundwater · local government · ND4900622 | 1,858 served |
| HILLSBORO CITY OF groundwater · local government · ND4900482 | 1,603 served |
| HATTON CITY OF buys groundwater · local government · ND4900465 | 777 served |
| PORTLAND CITY OF buys groundwater · local government · ND4900803 | 606 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 Traill County's jail, in Vera's latest figure (2019), or 40 per 100,000 residents ages 15–64. In 2014 it was about 1.
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.
4 school districts have their office in Traill County. School taxes are usually the largest part of a property tax bill.
Spent $7.5 million — $6.8 million to run schools, about $13,293 per student, plus $268,000 on buildings and equipment. Money in: $2.9 million local (mostly property tax), $4.1 million state, $736,000 federal. Long-term debt: $2.2 million.
Spent $8.8 million — $6.6 million to run schools, about $13,075 per student, plus $1.8 million on buildings and equipment. Money in: $3.5 million local (mostly property tax), $4 million state, $615,000 federal.
Spent $3.5 million — $3.1 million to run schools, about $14,706 per student, plus $203,000 on buildings and equipment. Money in: $1.4 million local (mostly property tax), $2 million state, $241,000 federal.
Spent $3.6 million — $3.2 million to run schools, about $17,983 per student, plus $64,000 on buildings and equipment. Money in: $1.6 million local (mostly property tax), $1.9 million state, $445,000 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 Traill County about $8.2 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
147 bridges in Traill County: 46 in good condition, 75 fair, and 26 poor (17.7%). “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.
| INTERSTATE 29 over GOOSE RIVER · built 1970 | 4,550 vehicles a day |
| INTERSTATE 29 over GOOSE RIVER · built 1970 | 4,550 vehicles a day |
| ND HIGHWAY 200 over GOOSE RIVER · built 1977 | 2,010 vehicles a day |
| ND HIGHWAY 200 over INTERMITTENT STREAM · built 1971 | 1,970 vehicles a day |
| COUNTY HIGHWAY over RED RIVER OF THE NORTH · built 1957 | 340 vehicles a day |
| COUNTY HIGHWAY over RED RIVER OF THE NORTH · built 1939 | 270 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $25.7 million of work in Traill County in fiscal 2025, about $3,219 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 North Dakota 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 Traill 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 Traill County built: brayden.ozark@gmail.com.
More of North Dakota: the state government and every county in North Dakota.
Nearby counties: Steele County (26 mi) · Norman County, MN (34 mi) · Grand Forks County (36 mi) · Cass County (36 mi) · Polk County, MN (42 mi) · Clay County, MN (49 mi).