139,823 people (2024 Census estimate, +4.6% since 2020)
791 square miles of land · 177 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.
21 active community water systems list Tangipahoa Parish in the area they serve, reporting 129,234 people served in all (a system that crosses county lines counts its whole population).
| TANGIPAHOA PARISH WATER DISTRICT groundwater · local government · LA1105008 | 75,873 served |
| CITY OF HAMMOND WATER SYSTEM groundwater · local government · LA1105009 | 21,135 served |
| CITY OF PONTCHATOULA WATER SYSTEM groundwater · local government · LA1105019 | 6,657 served |
| TOWN OF AMITE WATER SYSTEM groundwater · local government · LA1105001 | 4,300 served |
| UTILITIES INC - HAMMOND HEIGHTS groundwater · private · LA1105010 | 4,281 served |
| TANGIPAHOA (SECOND WARD) WATER DISTRICT groundwater · local government · LA1105077 | 4,112 served |
| TOWN OF INDEPENDENCE WATER SYSTEM groundwater · local government · LA1105012 | 3,052 served |
| TOWN OF KENTWOOD WATER SYSTEM groundwater · local government · LA1105014 | 2,205 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 563 people were held in Tangipahoa Parish's jail, in Vera's latest figure (2023), or 636 per 100,000 residents ages 15–64. In 2018 it was about 56.
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 Tangipahoa Parish. School taxes are usually the largest part of a property tax bill.
Spent $299.5 million — $265.3 million to run schools, about $12,817 per student, plus $31.5 million on buildings and equipment. Money in: $109.9 million local (mostly property tax), $136.7 million state, $59.7 million federal. Long-term debt: $34 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 Tangipahoa Parish about $107.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
477 bridges in Tangipahoa Parish: 190 in good condition, 228 fair, and 59 poor (12.4%). “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.
| US0051 over YELLOW WATER RIVER · built 1953 | 16,234 vehicles a day |
| LA3158 over DRAIN · built 1975 | 11,309 vehicles a day |
| LA1040 over YELLOW WATER RIVER · built 1958 | 7,190 vehicles a day |
| LA0443 over SKULLS CREEK · built 1954 | 6,478 vehicles a day |
| LA0022 over TANGIPAHOA RIVER · built 1939 | 6,435 vehicles a day |
| Phoenix square over CREEK · built 1975 | 5,021 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $71.7 million of work in Tangipahoa Parish in fiscal 2025, about $538 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 Tangipahoa 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 Tangipahoa Parish built: brayden.ozark@gmail.com.
More of Louisiana: the state government and every county in Louisiana.
Nearby counties: St. Helena Parish (23 mi) · Livingston Parish (23 mi) · Washington Parish (27 mi) · St. Tammany Parish (31 mi) · St. John the Baptist Parish (33 mi) · Pike County, MS (38 mi).