Slidell-Mandeville-Covington, LA, Louisiana: Old Confederacy metro. In 2024, voted R+44%. Democratic peak: D+89 in 1932.
Key facts
- 2024 presidential margin
- R+44MIT Election Lab
- Political archetype
- Old ConfederacyAkashic typology
- Population
- 272,4212024 5-year
- Median household income
- $81,2022024 5-year
- White (non-Hispanic)
- 73.8%2024 5-year
- Black
- 12.2%2024 5-year
- Hispanic / Latino
- 8.2%2024 5-year
- Peak Democratic margin
- D+89 in 1932MIT Election Lab
- Peak Republican margin
- R+55 in 1972MIT Election Lab
Constituent county margins for Slidell-Mandeville-Covington, LA, LAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 37,777 | 98,377 | 138,384 | ||
| R | 37,746 | 99,666 | 140,110 | ||
| R | 27,717 | 90,915 | 124,392 | ||
| R | 25,728 | 84,723 | 112,902 | ||
| R | 24,596 | 83,078 | 109,542 | ||
| R | 24,665 | 75,139 | 100,592 | ||
| R | 22,722 | 59,193 | 83,737 | ||
| R | 24,281 | 44,761 | 74,526 | ||
| R | 19,735 | 37,839 | 66,921 | ||
| R | 15,638 | 38,334 | 54,823 | ||
| R | 11,719 | 38,664 | 50,775 | ||
| R | 14,161 | 27,214 | 42,698 | ||
| R | 14,691 | 15,822 | 31,399 | ||
| R | 3,949 | 15,438 | 20,825 | ||
| O | 4,445 | 4,846 | 20,761 | ||
| D | 7,883 | 6,694 | 14,577 | ||
| D | 5,179 | 2,850 | 11,063 | ||
| R | 3,373 | 3,965 | 7,639 | ||
| D | 4,465 | 3,598 | 8,063 | ||
| O | 1,164 | 790 | 5,041 | ||
| D | 3,450 | 703 | 4,153 | ||
| D | 4,475 | 668 | 5,143 | ||
| D | 3,477 | 594 | 4,071 | ||
| D | 3,206 | 178 | 3,389 | ||
| D | 1,811 | 945 | 2,756 | ||
| D | 969 | 269 | 1,311 | ||
| D | 967 | 276 | 1,243 | ||
| D | 782 | 95 | 892 | ||
| D | 668 | 30 | 812 | ||
| D | 755 | 107 | 937 | ||
| D | 453 | 59 | 544 | ||
| D | 515 | 159 | 674 | ||
| D | 636 | 317 | 1,046 | ||
| D | 501 | 239 | 740 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
14.9%
French
14.1%
Irish
13.1%
English
10.8%
Italian
10.3%
American
9.6%
Scottish
1.6%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. 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
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$81,202
Slidell-Mandeville-Covington, LA ranks near the middle of US counties.
Slidell-Mandeville-Covington, LA$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 1815.0%
Working age (18–64)10.2%
Seniors (65+)11.0%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
93.0%
speak English only
Spanish4.3%
Other Indo-European1.4%
Asian & Pacific Islander1.0%
Other languages0.3%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 19.0% of residents not counted as adherents by any reporting body.
The Lake Pontchartrain corridor absorbed tens of thousands of New Orleans evacuees after 2005, accelerating demographic and political shifts in St. Tammany Parish, one of the fastest-growing and most reliably Republican-leaning metros in Louisiana.
The shift began with civil rights. 1960 marked the realignment in Slidell-Mandeville-Covington, LA, by a twenty-one 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 Slidell-Mandeville-Covington, LA, 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.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Slidell-Mandeville-Covington, LA, Louisiana — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/cbsa/43640/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Slidell-Mandeville-Covington, LA, Louisiana vote in 2024?
In 2024, Slidell-Mandeville-Covington, LA, Louisiana voted Republican by 43.8 points (R+44), carried by the Republican candidate. Out of 138,384 votes cast, 37,777 went Democratic and 98,377 went Republican.
What is Slidell-Mandeville-Covington, LA, Louisiana's political archetype?
Akashic classifies Slidell-Mandeville-Covington, LA, Louisiana as a "Old Confederacy" metro based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the metro has voted Democratic 17 times, Republican 15 times, and other 2 times.
When did Slidell-Mandeville-Covington, LA, Louisiana last vote Democratic?
The most recent presidential election in which Slidell-Mandeville-Covington, LA, Louisiana voted Democratic was 1964.
How many people live in Slidell-Mandeville-Covington, LA, Louisiana?
Slidell-Mandeville-Covington, LA, Louisiana has a population of 272,421 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Slidell-Mandeville-Covington, LA, Louisiana?
Median household income in Slidell-Mandeville-Covington, LA, Louisiana is $81,202 — above the national median of $80,734. The Louisiana state median is $60,756.
What is the political history of Slidell-Mandeville-Covington, LA, Louisiana?
Akashic tracks 38 presidential elections in Slidell-Mandeville-Covington, LA, Louisiana from 1876 to 2024. Of those, 17 went Democratic and 15 went Republican. The metro's archetype — "Old Confederacy" — captures the overall trajectory of that voting record.