23,351 people (2024 Census estimate, −0.7% since 2020)
633 square miles of land · 37 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.
11 active community water systems list Seminole County in the area they serve, reporting 16,313 people served in all (a system that crosses county lines counts its whole population).
| SEMINOLE groundwater · local government · OK2006720 | 6,899 served |
| WEWOKA PUBLIC WORKS AUTHORITY surface water · local government · OK1020510 | 3,450 served |
| BOWLEGS LIMA WATER groundwater · local government · OK2006701 | 2,500 served |
| KONAWA PWA groundwater · local government · OK2006704 | 1,479 served |
| SEMINOLE CO. RWD #7 groundwater · local government · OK2006756 | 450 served |
| SEMINOLE CO. RWD #1 buys surface water · local government · OK3006702 | 387 served |
| SEMINOLE CO. RW&SWMD #3 buys surface water · local government · OK3006703 | 337 served |
| SEMINOLE CO. RWD #2 buys surface water · local government · OK3006701 | 315 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 70 people were held in Seminole County's jail, in Vera's latest figure (2023), or 482 per 100,000 residents ages 15–64. In 2018 it was about 105.
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.
10 school districts have their office in Seminole County. School taxes are usually the largest part of a property tax bill.
Spent $18.8 million — $15.4 million to run schools, about $10,594 per student, plus $3.3 million on buildings and equipment. Money in: $5.1 million local (mostly property tax), $9 million state, $4.6 million federal. Long-term debt: $2.6 million.
Spent $9.1 million — $8.9 million to run schools, about $13,281 per student, plus $224,000 on buildings and equipment. Money in: $1.8 million local (mostly property tax), $4.9 million state, $3.2 million federal. Long-term debt: $1.5 million.
Spent $7.3 million — $6.7 million to run schools, about $12,327 per student, plus $573,000 on buildings and equipment. Money in: $3.2 million local (mostly property tax), $2.3 million state, $2.1 million federal. Long-term debt: $1.1 million.
Spent $5 million — $4.9 million to run schools, about $12,129 per student, plus $61,000 on buildings and equipment. Money in: $1.8 million local (mostly property tax), $2.3 million state, $852,000 federal. Long-term debt: $525,000.
Spent $4.2 million — $3.9 million to run schools, about $11,768 per student, plus $322,000 on buildings and equipment. Money in: $658,000 local (mostly property tax), $2.3 million state, $1.7 million federal.
Spent $3.2 million — $3 million to run schools, about $11,747 per student, plus $215,000 on buildings and equipment. Money in: $721,000 local (mostly property tax), $1.9 million state, $809,000 federal.
Spent $3.4 million — $3.3 million to run schools, about $14,108 per student, plus $181,000 on buildings and equipment. Money in: $843,000 local (mostly property tax), $1.5 million state, $1.1 million federal. Long-term debt: $315,000.
Spent $3.9 million — $3.1 million to run schools, about $14,082 per student, plus $816,000 on buildings and equipment. Money in: $734,000 local (mostly property tax), $1.9 million state, $1.3 million federal. Long-term debt: $540,000.
And 2 more.
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: Relatively Low compared with other U.S. counties. FEMA estimates natural hazards cost Seminole County about $13.4 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.
298 bridges in Seminole County: 108 in good condition, 154 fair, and 36 poor (12.1%). “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.
| U.S. 270 over CREEK · built 1943 | 7,400 vehicles a day |
| U.S. 270 over CARTER CREEK · built 1953 | 7,400 vehicles a day |
| U.S. 270 over CREEK · built 1957 | 6,100 vehicles a day |
| S.H. 9 over CREEK · built 1936 | 1,200 vehicles a day |
| N3560 over CREEK · built 1929 | 1,000 vehicles a day |
| 6718C over TRIBUTARY TO WEWOKA CK · built 1942 | 675 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $29.8 million of work in Seminole County in fiscal 2025, about $1,266 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 Seminole 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 Seminole County built: brayden.ozark@gmail.com.
More of Oklahoma: the state government and every county in Oklahoma.
Nearby counties: Pottawatomie County (20 mi) · Hughes County (21 mi) · Okfuskee County (26 mi) · Pontotoc County (31 mi) · Lincoln County (41 mi) · Cleveland County (41 mi).