41,181 people (2024 Census estimate, −7.8% since 2020)
724 square miles of land · 57 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 Washington County in the area they serve, reporting 46,465 people served in all (a system that crosses county lines counts its whole population).
| CITY OF GREENVILLE groundwater · local government · MS0760004 | 29,602 served |
| BLACK BAYOU WATER ASSN. groundwater · public/private · MS0760076 | 6,917 served |
| CITY OF LELAND groundwater · local government · MS0760006 | 4,591 served |
| CITY OF HOLLANDALE groundwater · local government · MS0760005 | 2,323 served |
| TOWN OF METCALFE groundwater · local government · MS0760007 | 1,125 served |
| GLEN ALLAN UTILITY DISTRICT groundwater · public/private · MS0760003 | 649 served |
| TOWN OF ARCOLA groundwater · local government · MS0760001 | 546 served |
| RASKIN ENTERPRISES LLC-DELTA VILLAGE MHP groundwater · private · MS0760017 | 491 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 347 people were held in Washington County's jail, in Vera's latest figure (2023), or 1,372 per 100,000 residents ages 15–64. In 2018 it was about 355.
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 Washington County. School taxes are usually the largest part of a property tax bill.
Spent $50.5 million — $44.7 million to run schools, about $12,612 per student, plus $5.6 million on buildings and equipment. Money in: $16.8 million local (mostly property tax), $22.2 million state, $18.6 million federal. Long-term debt: $5.1 million.
Spent $25.7 million — $22.8 million to run schools, about $13,954 per student, plus $2.7 million on buildings and equipment. Money in: $9.8 million local (mostly property tax), $9.6 million state, $6 million federal. Long-term debt: $6.8 million.
Spent $14.3 million — $12.5 million to run schools, about $17,804 per student, plus $1.5 million on buildings and equipment. Money in: $4.8 million local (mostly property tax), $4.9 million state, $4.5 million federal. Long-term debt: $8.4 million.
Spent $11 million — $10.4 million to run schools, about $19,027 per student, plus $546,000 on buildings and equipment. Money in: $2.5 million local (mostly property tax), $4 million state, $3.8 million federal. Long-term debt: $1.5 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Washington County about $30 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
310 bridges in Washington County: 110 in good condition, 174 fair, and 26 poor (8.4%). “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.
| SR 454 over CREEK · built 1936 | 4,200 vehicles a day |
| OLD LELAND ROAD over FISH LAKE-2006 · built 2006 | 2,736 vehicles a day |
| SR 12 over SUNFLOWER RIVER · built 1940 | 2,200 vehicles a day |
| SR 12 over GRANNY BAKER BAYOU · built 1966 | 390 vehicles a day |
| REXBURG ROAD over CANAL-2006 · built 1967 | 270 vehicles a day |
| WILCOX ROAD over CANAL · built 1970 | 220 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $109.9 million of work in Washington County in fiscal 2025, about $2,446 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 Mississippi 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 Washington 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 Washington County built: brayden.ozark@gmail.com.
More of Mississippi: the state government and every county in Mississippi.
Nearby counties: Chicot County, AR (20 mi) · Humphreys County (26 mi) · Sharkey County (27 mi) · Sunflower County (31 mi) · Issaquena County (36 mi) · Bolivar County (36 mi).