St. Tammany Parish, Louisiana

2024 results by precinct

170 precincts · 138,384 votes cast

Trump · R+44

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	R	−43.8%	37,777	98,377	138,384
2020	R	−44.2%	37,746	99,666	140,110
2016	R	−50.8%	27,717	90,915	124,392
2012	R	−52.3%	25,728	84,723	112,902
2008	R	−53.4%	24,596	83,078	109,542
2004	R	−50.2%	24,665	75,139	100,592
2000	R	−43.6%	22,722	59,193	83,737
1996	R	−27.5%	24,281	44,761	74,526
1992	R	−27.1%	19,735	37,839	66,921
1988	R	−41.4%	15,638	38,334	54,823
1984	R	−53.1%	11,719	38,664	50,775
1980	R	−30.6%	14,161	27,214	42,698
1976	R	−3.6%	14,691	15,822	31,399
1972	R	−55.2%	3,949	15,438	20,825
1968	R	−1.9%	4,445	4,846	20,761
1964	D	+8.2%	7,883	6,694	14,577
1960	D	+21.1%	5,179	2,850	11,063
1956	R	−7.7%	3,373	3,965	7,639
1952	D	+10.8%	4,465	3,598	8,063
1948	D	+7.4%	1,164	790	5,041
1944	D	+66.1%	3,450	703	4,153
1940	D	+74.0%	4,475	668	5,143
1936	D	+70.8%	3,477	594	4,071
1932	D	+89.3%	3,206	178	3,389
1928	D	+31.4%	1,811	945	2,756
1924	D	+53.4%	969	269	1,311
1920	D	+55.6%	967	276	1,243
1916	D	+77.0%	782	95	892
1912	D	+78.6%	668	30	812
1908	D	+69.2%	755	107	937
1904	D	+72.4%	453	59	544
1900	D	+52.8%	515	159	674
1896	D	+30.5%	636	317	1,046
1892	D	+35.4%	501	239	740
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

African American

9.8%

Multiple ancestry combinations reported; no single grouping above 1%.

American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.

Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 40.5 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.2%

2.4%

75–84

2.8%

5.3%

65–74

6.0%

6.5%

55–64

6.9%

6.1%

45–54

6.3%

6.5%

35–44

6.8%

5.5%

25–34

5.7%

4.0%

18–24

3.7%

9.2%

5–17

8.7%

2.9%

2.8%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$81,202

St. Tammany Parish ranks in the top 25% of US counties.

St. Tammany Parish$81,202

Louisiana$60,756

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

11.4%

Children face moderate poverty.

Children under 1818.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

54.8%

Baptist

9.1%

Other Christian

6.6%

Methodist

5.4%

Pentecostal & Holiness

2.9%

Mainline Protestant

1.5%

Non-Christian

0.7%

Source · 2020 US Religion Census. Remaining 19.0% of residents not counted as adherents by any reporting body.

Across Lake Pontchartrain from New Orleans, St. Tammany has absorbed decades of suburban migration and now returns presidential margins exceeding 40 points, making it one of the most reliably one-sided large counties in the Deep South.

The shift began with civil rights. 1968 marked the realignment in St. Tammany Parish, by a two points margin. The Republican margin reached its widest at fifty-five points in 1972. The 2024 margin was forty-four points.

The political shift has tracked, in St. Tammany Parish, the political shift of the South more broadly. A 74% non-Hispanic-white share, a median household income of $81,202, and a 11% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Canadian County and Autauga County.

Most similar counties

St. Tammany Parish voted Democratic for a century. The shift began with civil rights.