How many traffic fatalities occurred in St. Tammany County, Louisiana?

St. Tammany County recorded 260 total traffic fatalities across 247 reported crashes over the data period (2016-2023). The most recent year saw 40 fatalities. The county averages approximately 28.9 fatalities per year.

What is the leading cause of road fatalities in St. Tammany County?

Despite a comparatively active crash history (247 recorded crashes), individual cause-code breakdowns are not published for St. Tammany County in the current FARS release. Statewide data for Louisiana may provide additional context.

Is the trend of road fatalities in St. Tammany County increasing or decreasing?

The trend in St. Tammany County is increasing. This indicates that traffic fatalities have risen over the data period, warranting attention to road safety initiatives.

What is the fatality rate per capita in St. Tammany County?

St. Tammany County has a fatality rate of 14.5 per 100,000 residents, which places it close to the national middle by that per-capita measure among the 3,137 U.S. counties in this dataset.

How does St. Tammany County compare to the rest of Louisiana?

St. Tammany County's per-capita rate of 14.5 per 100,000 residents is below the Louisiana county average of 22.8. Visit the Louisiana state page for the full county-by-county breakdown.

Where does the road fatality data for St. Tammany County come from?

All road fatality data comes from the NHTSA Fatality Analysis Reporting System (FARS), a census of fatal motor vehicle crashes on public roads in the United States. FARS data covers the period 2016-2023 and includes all crashes resulting in at least one fatality within 30 days.

COUNTY FATALITY DATA

St. Tammany County, Louisiana

Road fatality data for St. Tammany County (LA). Data period: 2016-2023.

Compiled by PlainRoadSafety · August 9, 2026

260
Total Fatalities (2016-2023): 40
Latest Year Deaths: 14.5
Per 100k Residents: Increasing
Trend

The verdict

According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, St. Tammany County ranks #1,320 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #43 of 55 rated counties in LA. St. Tammany County's fatality rate of 14.5 per 100,000 residents places it close to the national middle by that per-capita measure.

#1,320 of 2,328
national by fatality rate: #43 of 55
in LA by rate: 56%
of rated U.S. counties are deadlier per capita: Increasing
fatality trend

NHTSA county milepost

Milepost ST-TAMMANY-1 · St. Tammany 14.5/100k · #1,320 of 2,328

St. Tammany County · 14.5/100k · increasing · cause n/a

CAUSE 14.5/100k
PHOTO #1,320 of 2,328
VS-ST 260 book
CRASH Increasing
FARS near Atlantic
NHTSA -36.4% vs LA

Stamps derive from this county's NHTSA FARS row (per-100k or book, corpus rank, trend, nationwide peer NAME, vs-state gap), not a trip-risk forecast. PlainRoadSafety is informational only. See our disclaimer. Verify with NHTSA FARS → · Read with methodology → · Understanding road fatality data → · Louisiana state profile →

St. Clair

14
St. Tammany

15
Atlantic

15
Lee

15
Genesee

15

What this shows St. Tammany County sits among nearest nationwide per-capita peers.

How does St. Tammany County compare?

2023 road deaths per 100,000 residents. Choose any comparison from the menu.

Compare with

St. Tammany County

14.5 per 100k

Louisiana county average

22.8 per 100k

St. Tammany County is 36% safer than the comparison

2023 road deaths from the NHTSA Fatality Analysis Reporting System over population from the U.S. Census Bureau Population Estimates Program (Vintage 2023). Rates shown for counties with 10,000+ residents and a 2023 FARS record.

Among the 15 rated counties in Louisiana, St. Tammany County ranks 15 for per-capita risk, below the state's own per-capita average of 22.8 per 100,000 -- nationally, this rate places it close to the national middle by that per-capita measure. The gap between St. Tammany County's rate and the state average is 8.3 per 100,000. Its closest per-capita peer statewide is Avoyelles County, at 28.6 per 100,000 (a difference of 14.1). Its peer counties, highest to lowest per 100,000 residents: St. Helena County (55.7), Grant County (54.8), Pointe Coupee County (50.0), St. John The Baptist County (40.4), De Soto County (36.9), Sabine County (36.5), Franklin County (36.3), Evangeline County (34.6), Union County (33.9), St. Martin County (33.3), Jefferson Davis County (31.7), East Feliciana County (31.2), Richland County (30.4), Avoyelles County (28.6).

St. Tammany County's rate vs. every rated U.S. county

Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population

15 Lower than most a lower per-capita rate than 56% of 2,328 rated counties

rated U.S. counties, bucketed by value

Each bar is a band; taller bars hold more rated counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source NHTSA FARS over U.S. Census Bureau population estimates · 2026-08-09

St. Tammany County's rate vs. the Louisiana state average

← Back to Louisiana All States

Source: NHTSA Fatality Analysis Reporting System (FARS) This information is for research and informational purposes only

Read our methodology - how this data is sourced, computed, and verified.

Counties with similar FARS profiles

Two cross-state peer sets for St. Tammany County. Same-state rate comparisons stay in the chart above; these neighborhoods are nearest other-state counties with population at least 250,000.

Similar per-capita fatality rate

Nearest counties by deaths per 100,000 residents (14.5 here), outside Louisiana.

Atlantic County 14.5 /100k · NJ Lee County 14.6 /100k · FL Genesee County 14.7 /100k · MI St. Clair County 14.3 /100k · IL

Similar fatality volume

Nearest counties by recorded FARS deaths (260 here), excluding the rate-peer set.

Chester County 260 deaths · PA Clark County 259 deaths · WA Baldwin County 258 deaths · AL Kalamazoo County 258 deaths · MI

Verify with NHTSA FARS →

Verify with FHWA →

Source and method. PlainRoadSafety is rendered directly from the National Highway Traffic Safety Administration Fatality Analysis Reporting System (FARS). PlainRoadSafety aggregates published FARS records and does not invent a fatality count the census does not report. County figures are computed directly from NHTSA FARS census data, no figure is typed in by an editor. See our Editorial & Corrections Policy, the methodology behind these numbers, or Report a correction. Data current as of October 2024.