5,374 people (2024 Census estimate, +0.8% since 2020)
759 square miles of land · 7 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.
6 active community water systems list Jefferson County in the area they serve, reporting 12,925 people served in all (a system that crosses county lines counts its whole population).
| JEFFERSON CO CONS RWD #1 buys surface water · local government · OK3003401 | 8,398 served |
| WAURIKA PUBLIC WORKS AUTHORITY surface water · local government · OK1011201 | 2,100 served |
| RINGLING groundwater · local government · OK2003404 | 1,200 served |
| RYAN UTILITIES AUTHORITY buys surface water · local government · OK3003405 | 800 served |
| TERRAL buys surface water · local government · OK2003405 | 386 served |
| CORNISH buys groundwater · local government · OK3003404 | 41 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 24 people were held in Jefferson County's jail, in Vera's latest figure (2023), or 762 per 100,000 residents ages 15–64. In 2018 it was about 23.
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 Jefferson County. School taxes are usually the largest part of a property tax bill.
Spent $7.6 million — $7.5 million to run schools, about $16,507 per student, plus $11,000 on buildings and equipment. Money in: $3.2 million local (mostly property tax), $3.6 million state, $1.7 million federal. Long-term debt: $1.2 million.
Spent $5.6 million — $4.7 million to run schools, about $11,921 per student, plus $762,000 on buildings and equipment. Money in: $1.5 million local (mostly property tax), $3.1 million state, $1.3 million federal. Long-term debt: $1.1 million.
Spent $4 million — $3.9 million to run schools, about $17,341 per student, plus $107,000 on buildings and equipment. Money in: $913,000 local (mostly property tax), $2.1 million state, $848,000 federal. Long-term debt: $635,000.
Spent $1.1 million — $1.1 million to run schools, about $33,844 per student, plus $36,000 on buildings and equipment. Money in: $293,000 local (mostly property tax), $191,000 state, $251,000 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 Jefferson County about $4.8 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very Low; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
150 bridges in Jefferson County: 75 in good condition, 67 fair, and 8 poor (5.3%). “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.
| 3446C MAJOR over COW CREEK · built 1993 | 100 vehicles a day |
| E2020 over N. MUD CREEK · built 1939 | 90 vehicles a day |
| E1950 over CREEK · built 1939 | 75 vehicles a day |
| E2050 over CREEK · built 1940 | 50 vehicles a day |
| E1930 over BEAVER CREEK · built 1939 | 50 vehicles a day |
| E2170 over CREEK · built 1993 | 50 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $2.1 million of work in Jefferson County in fiscal 2025, about $388 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 Oklahoma 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 Jefferson 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 Jefferson County built: brayden.ozark@gmail.com.
More of Oklahoma: the state government and every county in Oklahoma.
Nearby counties: Stephens County (26 mi) · Montague County, TX (30 mi) · Clay County, TX (31 mi) · Carter County (33 mi) · Cotton County (33 mi) · Love County (35 mi).