Fatal crashes in St. Tammany Parish, Louisiana
In 2024, 31 people died in 30 fatal crashes in St. Tammany Parish, Louisiana, 22.5% fewer than in 2023. From 2015 to 2024 the county recorded 301 fatal crashes and 317 deaths, the 6th most of 64 counties in Louisiana.
11.2 deaths per 100,000 residents, against 16.4 across Louisiana in 2024; 12 against 17.3 a year over 2015 to 2024. Population 277,615, Census Bureau estimate. All fatal crashes in Louisiana.
Deaths in St. Tammany Parish by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 30 | 31 |
| 2023 | 38 | 40 |
| 2022 | 33 | 34 |
| 2021 | 28 | 29 |
| 2020 | 37 | 41 |
| 2019 | 34 | 34 |
| 2018 | 25 | 29 |
| 2017 | 30 | 30 |
| 2016 | 22 | 23 |
| 2015 | 24 | 26 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
The deadliest roads in St. Tammany Parish
I-12 had the most fatal crashes of any numbered road in St. Tammany Parish from 2015 to 2024: 51, with 56 deaths. The 13 roads listed held 75% of all fatal crashes in St. Tammany Parish from 2015 to 2024; 3 are interstates, 2 US routes, 8 state highways. 85% of the county's fatal crashes were on an interstate, US or state route; the other 15% were on county roads and city streets. Routes are listed from 5 fatal crashes.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | I-12 | 51 | 56 | 22 | |
| 2 | US 190 | 46 | 49 | 13 | |
| 3 | I-10 | 34 | 36 | 12 | |
| 4 | State Highway 21 | 15 | 15 | 3 | no page |
| 5 | State Highway 25 | 13 | 14 | 7 | no page |
| 6 | State Highway 437 | 13 | 13 | 6 | no page |
| 7 | US 11 | 11 | 12 | 7 | no page |
| 8 | State Highway 433 | 11 | 11 | 3 | no page |
| 9 | I-59 | 10 | 10 | 3 | no page |
| 10 | State Highway 41 | 6 | 6 | 1 | no page |
| 11 | State Highway 59 | 6 | 6 | 0 | no page |
| 12 | State Highway 22 | 5 | 6 | 1 | |
| 13 | State Highway 1090 | 5 | 5 | 1 | no page |
Slidell had 15% of the county's fatal crashes from 2015 to 2024, 44 of 301.
Cities NHTSA filed, with their fatal crashes from 2015 to 2024: Slidell 44, Covington 15, Mandeville 9. The city is not filed for crashes outside a city.
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen in St. Tammany Parish
The heaviest slot is Friday, 8 pm to midnight, with 16 fatal crashes from 2015 to 2024. The worst hour is 8 pm to 9 pm; the worst month is April.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 2.0 percent, 6 fatal crashes | 0.7 percent, 2 fatal crashes | 1.7 percent, 5 fatal crashes | 1.7 percent, 5 fatal crashes | 2.7 percent, 8 fatal crashes | 4.7 percent, 14 fatal crashes |
| Mon | 0.7 percent, 2 fatal crashes | 1.3 percent, 4 fatal crashes | 2.0 percent, 6 fatal crashes | 3.3 percent, 10 fatal crashes | 3.3 percent, 10 fatal crashes | 2.7 percent, 8 fatal crashes |
| Tue | 1.3 percent, 4 fatal crashes | 3.3 percent, 10 fatal crashes | 0.7 percent, 2 fatal crashes | 2.0 percent, 6 fatal crashes | 2.7 percent, 8 fatal crashes | 3.3 percent, 10 fatal crashes |
| Wed | 1.0 percent, 3 fatal crashes | 2.3 percent, 7 fatal crashes | 1.7 percent, 5 fatal crashes | 2.3 percent, 7 fatal crashes | 3.0 percent, 9 fatal crashes | 3.7 percent, 11 fatal crashes |
| Thu | 1.0 percent, 3 fatal crashes | 1.0 percent, 3 fatal crashes | 1.0 percent, 3 fatal crashes | 1.7 percent, 5 fatal crashes | 3.7 percent, 11 fatal crashes | 4.0 percent, 12 fatal crashes |
| Fri | 2.0 percent, 6 fatal crashes | 3.7 percent, 11 fatal crashes | 3.0 percent, 9 fatal crashes | 1.3 percent, 4 fatal crashes | 5.0 percent, 15 fatal crashes | 5.3 percent, 16 fatal crashes |
| Sat | 3.7 percent, 11 fatal crashes | 0.3 percent, 1 fatal crash | 0.7 percent, 2 fatal crashes | 2.0 percent, 6 fatal crashes | 3.3 percent, 10 fatal crashes | 3.7 percent, 11 fatal crashes |
By hour
By month
- Jan8.3%
- Feb6.3%
- Mar8.0%
- Apr10.3%
- May10.0%
- Jun7.3%
- Jul7.6%
- Aug9.6%
- Sep8.0%
- Oct7.3%
- Nov8.0%
- Dec9.3%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in St. Tammany Parish first hit
The first harmful event was a collision with another vehicle in 44%; a fixed object such as a tree, pole or barrier in 32%, a pedestrian in 14%, a cyclist in 3.3%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 132 | 44% |
| Fixed object (tree, pole, barrier, ditch) | 97 | 32% |
| Pedestrian | 41 | 14% |
| Cyclist | 10 | 3.3% |
| Rollover | 9 | 3.0% |
| Other | 9 | 3.0% |
| Parked vehicle | 3 | 1.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes in St. Tammany Parish compare with Louisiana
The largest difference from Louisiana: from 2015 to 2024, 48% of fatal crashes in St. Tammany Parish were in the dark on unlit roads, against 35% across Louisiana. Also above the Louisiana share: speeding and distracted drivers. Below it: unbelted occupants. Shares of fatal crashes from 2015 to 2024, against the share across all of Louisiana. A share is only given over 20 crashes; above or below means more than chance would give on 301 crashes.
| St. Tammany Parish | Louisiana | ||
|---|---|---|---|
| On rural roads | 42% | 45% | about the same as the Louisiana share |
| At or near an intersection | 16% | 20% | about the same as the Louisiana share |
| In the dark, road unlit | 48% | 35% | above the Louisiana share |
| A drinking driver | 32% | 31% | about the same as the Louisiana share |
| Speeding | 30% | 22% | above the Louisiana share |
| A distracted driver (as recorded) | 31% | 21% | above the Louisiana share |
| Occupants killed unbelted | 47% | 57% | below the Louisiana share |
| Hit-and-run | 4.7% | 7.3% | about the same as the Louisiana share |
| A motorcycle involved | 13% | 12% | about the same as the Louisiana share |
| Pedestrians among the dead | 15% | 18% | about the same as the Louisiana share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in St. Tammany Parish, Louisiana
- How many people died in car accidents in St. Tammany Parish in 2024?
- 31 people died in 30 fatal crashes in St. Tammany Parish, Louisiana, in 2024, 22.5% fewer than in 2023. That is 11.2 deaths per 100,000 residents, against 16.4 across Louisiana. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- What is the deadliest road in St. Tammany Parish?
- I-12 had the most fatal crashes of any numbered road in St. Tammany Parish from 2015 to 2024: 51, with 56 deaths.
- When do fatal crashes in St. Tammany Parish happen most often?
- The heaviest slot from 2015 to 2024 was Friday, 8 pm to midnight, with 16 fatal crashes.
- How many fatal crashes in St. Tammany Parish involved a drinking driver?
- 95 of 301 fatal crashes in St. Tammany Parish from 2015 to 2024 involved a driver NHTSA recorded as drinking, 32%, against 31% across Louisiana.
Other counties in Louisiana with a page
- East Baton Rouge Parish
- Orleans Parish
- Caddo Parish
- Calcasieu Parish
- Jefferson Parish
- Tangipahoa Parish
- Ouachita Parish
- Lafayette Parish
- Livingston Parish
- Rapides Parish
- Ascension Parish
- Lafourche Parish
All fatal crashes in Louisiana, with every county ranked.
Where the St. Tammany Parish numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in St. Tammany Parish (county code 103). A fatal crash is one in which someone died within 30 days. The rate per 100,000 uses the Census Bureau's population estimate for the county; it is the only figure here not counted from FARS. Totals from state highway departments and news reports can differ: they count from their own crash reports, often before every death within 30 days is known, while NHTSA's file is checked against death certificates and revised once a year. The full method.
Download every county with a page as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/louisiana/st-tammany-parish/, from NHTSA FARS (2024 Annual Report File).”