80,869 people (2024 Census estimate, −1.8% since 2020)
923 square miles of land · 88 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.
28 active community water systems list St. Landry Parish in the area they serve, reporting 111,771 people served in all (a system that crosses county lines counts its whole population).
| CITY OF OPELOUSAS WATER SYSTEM groundwater · local government · LA1097010 | 20,388 served |
| LAWCO - EUNICE WATER SYSTEM groundwater · private · LA1097022 | 15,471 served |
| TOWN OF LEONVILLE WATER SYSTEM groundwater · local government · LA1097005 | 9,552 served |
| LEWISBURG BELLEVUE WATER SYSTEM groundwater · private · LA1097006 | 8,325 served |
| SAVOY SWORDS WATER SYSTEM INC groundwater · private · LA1097024 | 7,326 served |
| PLAISANCE WATER SYSTEM groundwater · private · LA1097012 | 6,465 served |
| PRAIRIE RONDE WATER SYSTEM INC groundwater · private · LA1097014 | 6,105 served |
| ST LANDRY WATER WORKS DISTRICT 2 RURAL groundwater · local government · LA1097033 | 4,761 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 275 people were held in St. Landry Parish's jail, in Vera's latest figure (2023), or 556 per 100,000 residents ages 15–64. In 2018 it was about 299.
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 St. Landry Parish. School taxes are usually the largest part of a property tax bill.
Spent $194.4 million — $180.1 million to run schools, about $14,349 per student, plus $10.1 million on buildings and equipment. Money in: $53.5 million local (mostly property tax), $83.1 million state, $60.4 million federal. Long-term debt: $20.6 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 St. Landry Parish about $49.9 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
316 bridges in St. Landry Parish: 133 in good condition, 155 fair, and 28 poor (8.9%). “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.
| US0190 over UPRR/ Acadia Prep Cir · built 1962 | 20,176 vehicles a day |
| US0190 over ATCHAFALAYA FLDWY · built 1961 | 14,088 vehicles a day |
| I0049 over LA0010 · built 1989 | 13,540 vehicles a day |
| US0190 over LITTLE TECHE BAYOU · built 1962 | 10,487 vehicles a day |
| I0049 over LA0010 · built 1989 | 9,668 vehicles a day |
| LA0754 over DRAINAGE CANAL · built 1964 | 2,371 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $37.3 million of work in St. Landry Parish in fiscal 2025, about $452 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 Louisiana 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 St. Landry Parish 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 St. Landry Parish built: brayden.ozark@gmail.com.
More of Louisiana: the state government and every county in Louisiana.
Nearby counties: Pointe Coupee Parish (24 mi) · Lafayette Parish (26 mi) · Evangeline Parish (26 mi) · Acadia Parish (32 mi) · Avoyelles Parish (35 mi) · St. Martin Parish (39 mi).