26,172 people (2024 Census estimate, +1.7% since 2020)
661 square miles of land · 40 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.
10 active community water systems list Johnson County in the area they serve, reporting 31,098 people served in all (a system that crosses county lines counts its whole population).
| CLARKSVILLE CONNECTED UTILITIES surface water · local government · AR0000289 | 9,410 served |
| HORSEHEAD WATER ASSOCIATION buys surface water · local government · AR0000617 | 5,792 served |
| EAST JOHNSON CO WATER ASSN buys surface water · local government · AR0000772 | 5,200 served |
| WATALULA WATER ASS0CIATION buys surface water · local government · AR0000606 | 2,278 served |
| KNOXVILLE WATERWORKS buys surface water · local government · AR0000287 | 2,087 served |
| LAMAR WATERWORKS buys surface water · local government · AR0000288 | 1,885 served |
| LUDWIG WATER ASSOCIATION buys surface water · local government · AR0000292 | 1,610 served |
| COAL HILL WATERWORKS buys surface water · local government · AR0000290 | 1,372 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 79 people were held in Johnson County's jail, in Vera's latest figure (2021), or 487 per 100,000 residents ages 15–64. In 2016 it was about 50.
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.
3 school districts have their office in Johnson County. School taxes are usually the largest part of a property tax bill.
Spent $33.1 million — $30.6 million to run schools, about $12,127 per student, plus $1.5 million on buildings and equipment. Money in: $3.5 million local (mostly property tax), $24.2 million state, $6.9 million federal. Long-term debt: $25.9 million.
Spent $17.3 million — $16 million to run schools, about $12,438 per student, plus $810,000 on buildings and equipment. Money in: $1.9 million local (mostly property tax), $12.5 million state, $3.5 million federal. Long-term debt: $14.8 million.
Spent $8.7 million — $8.3 million to run schools, about $13,181 per student, plus $263,000 on buildings and equipment. Money in: $780,000 local (mostly property tax), $6.1 million state, $2.4 million federal. Long-term debt: $4.5 million.
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 Johnson County about $14.3 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.
162 bridges in Johnson County: 71 in good condition, 88 fair, and 3 poor (1.9%). “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.
| SH 215 over Wolfe Pen Creek · built 1937 | 127 vehicles a day |
| SH 123 over Big Piney · built 1931 | 60 vehicles a day |
| SH 123 over Gee Creek · built 1960 | 60 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $24.6 million of work in Johnson County in fiscal 2025, about $957 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.
General election: Tuesday, November 3, 2026. Last day to register to vote: 2026-10-05. Early voting: 2026-10-19 to 2026-11-02. Absentee application due (by mail, email, or fax): 2026-10-27. Absentee ballot hand-delivered by you: last day: 2026-10-30. Election Day — and mailed absentee ballots must arrive: 2026-11-03. Provisional ballot: show your ID by noon: 2026-11-09. General runoff (only where a race needs one): 2026-12-01.
Source: Arkansas Secretary of State, 2026 election calendar · Fayetteville Flyer, Oct. 5, 2026 · sos.arkansas.gov — voting in Arkansas
The budget, property tax rates, audits, local officials and offices for Johnson 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 Johnson County built: brayden.ozark@gmail.com.
More of Arkansas: the state government and every county in Arkansas.
Nearby counties: Franklin County (24 mi) · Pope County (26 mi) · Newton County (27 mi) · Logan County (28 mi) · Madison County (34 mi) · Yell County (40 mi).