Jefferson Parish, Louisiana: Old Confederacy county. In 2024, voted R+13%. Democratic peak: D+95 in 1904.
Key facts
- 2024 presidential margin
- R+13MIT Election Lab
- Political archetype
- Old ConfederacyAkashic typology
- Population
- 430,9202024 5-year
- Median household income
- $65,2522024 5-year
- White (non-Hispanic)
- 49.8%2024 5-year
- Black
- 25.5%2024 5-year
- Hispanic / Latino
- 18.9%2024 5-year
- Peak Democratic margin
- D+95 in 1904MIT Election Lab
- Peak Republican margin
- R+53 in 1972MIT Election Lab
- Most similar
- DeSoto County, MS · similarity 0.97
2024 results by precinct
2024 precinct map of Jefferson ParishPrecinct-level 2024 presidential results for Jefferson Parish, with each precinct boundary colored by Democratic-vs-Republican margin.
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 75,731 | 98,810 | 178,205 | ||
| R | 84,477 | 105,949 | 193,733 | ||
| R | 73,670 | 100,398 | 181,639 | ||
| R | 70,384 | 102,536 | 176,343 | ||
| R | 65,096 | 113,191 | 181,120 | ||
| R | 72,136 | 117,882 | 191,663 | ||
| R | 70,411 | 105,003 | 179,151 | ||
| R | 80,407 | 92,820 | 184,466 | ||
| R | 64,302 | 100,493 | 187,038 | ||
| R | 53,035 | 110,942 | 166,370 | ||
| R | 41,183 | 123,997 | 166,023 | ||
| R | 50,870 | 99,403 | 155,111 | ||
| R | 53,257 | 71,787 | 127,560 | ||
| R | 20,981 | 75,348 | 101,841 | ||
| O | 20,193 | 29,478 | 91,573 | ||
| D | 37,161 | 31,804 | 68,965 | ||
| D | 32,119 | 17,215 | 62,638 | ||
| R | 16,577 | 24,324 | 42,499 | ||
| D | 19,365 | 17,090 | 36,455 | ||
| O | 4,654 | 2,620 | 16,168 | ||
| D | 10,268 | 1,782 | 12,050 | ||
| D | 8,334 | 982 | 9,316 | ||
| D | 9,056 | 705 | 9,767 | ||
| D | 7,395 | 466 | 7,875 | ||
| D | 5,326 | 742 | 6,068 | ||
| D | 1,663 | 296 | 2,175 | ||
| D | 1,238 | 192 | 1,430 | ||
| D | 1,041 | 56 | 1,105 | ||
| D | 607 | 7 | 738 | ||
| D | 1,122 | 30 | 1,152 | ||
| D | 1,110 | 25 | 1,143 | ||
| D | 1,282 | 59 | 1,341 | ||
| D | 1,383 | 352 | 1,744 | ||
| D | 1,275 | 235 | 1,510 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
French
10.5%
German
9.3%
Italian
9.0%
Irish
7.2%
English
6.0%
American
3.7%
Scottish
0.8%
African American
20.4%
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. 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: 40.0 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
$65,252
Jefferson Parish ranks near the middle of US counties.
Jefferson Parish$65,252
Louisiana$60,756
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
16.6%
Children face moderate poverty.
Children under 1823.5%
Working age (18–64)14.6%
Seniors (65+)14.6%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
78.6%
speak English only
Spanish14.3%
Asian & Pacific Islander2.9%
Other Indo-European2.6%
Other languages1.6%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 29.1% of residents not counted as adherents by any reporting body.
Jefferson Parish, the dense suburban ring west and east of New Orleans, delivered a 12.9-point Republican margin in 2024 — a notable swing from the competitive results it posted in the early 2000s, reflecting demographic sorting across Louisiana's metro fringe.
The shift began with civil rights. 1960 marked the realignment in Jefferson Parish, by a twenty-four points margin. The Republican margin reached its widest at fifty-three points in 1972. The 2024 margin was thirteen points.
The political shift has tracked, in Jefferson Parish, the political shift of the South more broadly. A 50% non-Hispanic-white share, a median household income of $65,252, and a 17% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of DeSoto County and Madison County.
Most similar counties
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Jefferson Parish, Louisiana — The Long Memory. Akashic Intelligence — The Long Memory. https://akashic.app/county/22051/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in Louisiana
More old confederacy counties
Frequently asked questions
How did Jefferson Parish, Louisiana vote in 2024?
In 2024, Jefferson Parish, Louisiana voted Republican by 13.0 points (R+13), carried by the Republican candidate. Out of 178,205 votes cast, 75,731 went Democratic and 98,810 went Republican.
What is Jefferson Parish, Louisiana's political archetype?
Akashic classifies Jefferson Parish, Louisiana as a "Old Confederacy" county based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the county has voted Democratic 17 times, Republican 15 times, and other 2 times.
When did Jefferson Parish, Louisiana last vote Democratic?
The most recent presidential election in which Jefferson Parish, Louisiana voted Democratic was 1964.
How many people live in Jefferson Parish, Louisiana?
Jefferson Parish, Louisiana has a population of 430,920 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Jefferson Parish, Louisiana?
Median household income in Jefferson Parish, Louisiana is $65,252 — below the national median of $80,734. The Louisiana state median is $60,756.
What is the political history of Jefferson Parish, Louisiana?
Akashic tracks 38 presidential elections in Jefferson Parish, Louisiana from 1876 to 2024. Of those, 17 went Democratic and 15 went Republican. The county's archetype — "Old Confederacy" — captures the overall trajectory of that voting record.