66,734 people (2024 Census estimate, +3.6% since 2020)
497 square miles of land · 134 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 Lamar County in the area they serve, reporting 65,774 people served in all (a system that crosses county lines counts its whole population).
| WEST LAMAR WATER ASSN #1 groundwater · public/private · MS0370011 | 18,491 served |
| NORTH LAMAR WATER ASSOCIATION groundwater · public/private · MS0370006 | 12,778 served |
| LAMAR PARK WATER & SEWAGE ASSN groundwater · public/private · MS0370004 | 7,714 served |
| PROGRESS COMM WATER ASSN groundwater · public/private · MS0370008 | 7,017 served |
| ARNOLD LINE WATER ASSOCIATION groundwater · public/private · MS0370001 | 6,600 served |
| NORTH LUMBERTON UTILITY ASSN groundwater · public/private · MS0370007 | 4,071 served |
| CANEBRAKE UTILITY ASSOC INC groundwater · private · MS0370016 | 2,619 served |
| CITY OF PURVIS groundwater · local government · MS0370009 | 2,590 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 86 people were held in Lamar County's jail, in Vera's latest figure (2021), or 202 per 100,000 residents ages 15–64. In 2016 it was about 117.
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.
1 school district has its office in Lamar County. School taxes are usually the largest part of a property tax bill.
Spent $122.1 million — $115 million to run schools, about $11,188 per student, plus $6 million on buildings and equipment. Money in: $44.2 million local (mostly property tax), $67.8 million state, $22.9 million federal. Long-term debt: $23.4 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 Lamar County about $21.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
151 bridges in Lamar County: 126 in good condition, 25 fair, and 0 poor (0.0%). “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.
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $3.3 million of work in Lamar County in fiscal 2025, about $52 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 Lamar 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 Lamar County built: brayden.ozark@gmail.com.
More of Mississippi: the state government and every county in Mississippi.
Nearby counties: Forrest County (15 mi) · Marion County (19 mi) · Pearl River County (30 mi) · Covington County (30 mi) · Perry County (31 mi) · Jefferson Davis County (32 mi).