11,750 people (2024 Census estimate, −3.1% since 2020)
412 square miles of land · 29 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 Mississippi County in the area they serve, reporting 12,823 people served in all (a system that crosses county lines counts its whole population).
| CHARLESTON PWS groundwater · local government · MO4010160 | 5,900 served |
| MISSISSIPPI COUNTY PWSD 1 buys groundwater · local government · MO4021178 | 3,000 served |
| EAST PRAIRIE PWS groundwater · local government · MO4010235 | 2,696 served |
| BERTRAND PWS groundwater · local government · MO4010067 | 733 served |
| WYATT PWS groundwater · local government · MO4010876 | 319 served |
| ANNISTON PWS buys groundwater · local government · MO4010018 | 175 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 73 people were held in Mississippi County's jail, in Vera's latest figure (2019), or 871 per 100,000 residents ages 15–64. In 2014 it was about 63.
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.
2 school districts have their office in Mississippi County. School taxes are usually the largest part of a property tax bill.
Spent $11.6 million — $10.9 million to run schools, about $10,542 per student, plus $177,000 on buildings and equipment. Money in: $3.7 million local (mostly property tax), $6.8 million state, $3 million federal. Long-term debt: $8.9 million.
Spent $13.6 million — $10.5 million to run schools, about $13,552 per student, plus $3 million on buildings and equipment. Money in: $3.4 million local (mostly property tax), $4.3 million state, $5.5 million 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: Relatively Low compared with other U.S. counties. FEMA estimates natural hazards cost Mississippi County about $15.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
99 bridges in Mississippi County: 27 in good condition, 62 fair, and 10 poor (10.1%). “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.
| US 62 E over IS 57 · built 1972 | 4,227 vehicles a day |
| US 60 W over MISSISSIPPI RVR · built 1929 | 2,670 vehicles a day |
| MO 75 S over DRAIN DTCH #14 · built 1922 | 690 vehicles a day |
| MO 80 E over DRAIN DTCH #23 · built 1922 | 628 vehicles a day |
| COUNTY RD 525 over ST JAMES DRAIN DTC · built 1955 | 40 vehicles a day |
| COUNTY RD 322 over DRAIN DTCH · built 1966 | 35 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $9.5 million of work in Mississippi County in fiscal 2025, about $754 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 Missouri 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 Mississippi 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 Mississippi County built: brayden.ozark@gmail.com.
More of Missouri: the state government and every county in Missouri.
Nearby counties: Carlisle County, KY (18 mi) · Fulton County, KY (20 mi) · Hickman County, KY (21 mi) · Scott County (21 mi) · Ballard County, KY (22 mi) · Alexander County, IL (25 mi).