Data / Rankings / Population density / Counties in Louisiana

Counties in Louisiana by population density

Orleans Parish had the highest population density of 64 counties in 2020, at 872.9 inhabitants per km². Cameron Parish had the lowest, at 1.7 inhabitants per km². The median was 18.8 inhabitants per km² and the figure for Louisiana was 41.6 inhabitants per km². Source: the U.S. Census Bureau.

Highest872.9Orleans Parish
Lowest1.7Cameron Parish
Median18.864 counties
Louisiana41.6History

Top 40 counties, 2020

CSVChart (SVG)

Orleans ParishOrleans Parish: 872.9 inhabitants per km²872.9Jefferson ParishJefferson Parish: 564.3 inhabitants per km²564.3East Baton Rouge ParishEast Baton Rouge Parish: 386.5 inhabitants per km²386.5Lafayette ParishLafayette Parish: 347.8 inhabitants per km²347.8Ascension ParishAscension Parish: 169.1 inhabitants per km²169.1St. Tammany ParishSt. Tammany Parish: 121 inhabitants per km²121Caddo ParishCaddo Parish: 104.1 inhabitants per km²104.1Ouachita ParishOuachita Parish: 101.3 inhabitants per km²101.3Livingston ParishLivingston Parish: 85.1 inhabitants per km²85.1Calcasieu ParishCalcasieu Parish: 78.5 inhabitants per km²78.5St. John the Baptist ParishSt. John the Baptist Parish: 76.3 inhabitants per km²76.3St. Charles ParishSt. Charles Parish: 73 inhabitants per km²73Tangipahoa ParishTangipahoa Parish: 65.2 inhabitants per km²65.2Bossier ParishBossier Parish: 59.2 inhabitants per km²59.2West Baton Rouge ParishWest Baton Rouge Parish: 54.7 inhabitants per km²54.7Iberia ParishIberia Parish: 47.1 inhabitants per km²47.1St. Bernard ParishSt. Bernard Parish: 44.9 inhabitants per km²44.9Lincoln ParishLincoln Parish: 39.5 inhabitants per km²39.5Rapides ParishRapides Parish: 37.8 inhabitants per km²37.8Lafourche ParishLafourche Parish: 35.2 inhabitants per km²35.2St. Landry ParishSt. Landry Parish: 34.4 inhabitants per km²34.4Terrebonne ParishTerrebonne Parish: 34.3 inhabitants per km²34.3St. Mary ParishSt. Mary Parish: 34 inhabitants per km²34Acadia ParishAcadia Parish: 33.9 inhabitants per km²33.9St. James ParishSt. James Parish: 32.7 inhabitants per km²32.7St. Martin ParishSt. Martin Parish: 27 inhabitants per km²27Washington ParishWashington Parish: 26.2 inhabitants per km²26.2Webster ParishWebster Parish: 24 inhabitants per km²24Assumption ParishAssumption Parish: 23.5 inhabitants per km²23.5Jefferson Davis ParishJefferson Davis Parish: 19.1 inhabitants per km²19.1Evangeline ParishEvangeline Parish: 18.8 inhabitants per km²18.8Iberville ParishIberville Parish: 18.8 inhabitants per km²18.8Vermilion ParishVermilion Parish: 18.8 inhabitants per km²18.8Avoyelles ParishAvoyelles Parish: 18.4 inhabitants per km²18.4East Feliciana ParishEast Feliciana Parish: 16.6 inhabitants per km²16.6West Feliciana ParishWest Feliciana Parish: 14.6 inhabitants per km²14.6Pointe Coupee ParishPointe Coupee Parish: 14.4 inhabitants per km²14.4Vernon ParishVernon Parish: 14.2 inhabitants per km²14.2Richland ParishRichland Parish: 13.9 inhabitants per km²13.9Grant ParishGrant Parish: 13.3 inhabitants per km²13.3
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2020
inhabitants per km²
1Orleans Parish872.9
2Jefferson Parish564.3
3East Baton Rouge Parish386.5
4Lafayette Parish347.8
5Ascension Parish169.1
6St. Tammany Parish121
7Caddo Parish104.1
8Ouachita Parish101.3
9Livingston Parish85.1
10Calcasieu Parish78.5
11St. John the Baptist Parish76.3
12St. Charles Parish73
13Tangipahoa Parish65.2
14Bossier Parish59.2
15West Baton Rouge Parish54.7
16Iberia Parish47.1
17St. Bernard Parish44.9
18Lincoln Parish39.5
19Rapides Parish37.8
20Lafourche Parish35.2
21St. Landry Parish34.4
22Terrebonne Parish34.3
23St. Mary Parish34
24Acadia Parish33.9
25St. James Parish32.7
26St. Martin Parish27
27Washington Parish26.2
28Webster Parish24
29Assumption Parish23.5
30Jefferson Davis Parish19.1
31Evangeline Parish18.8
32Iberville Parish18.8
33Vermilion Parish18.8
34Avoyelles Parish18.4
35East Feliciana Parish16.6
36West Feliciana Parish14.6
37Pointe Coupee Parish14.4
38Vernon Parish14.2
39Richland Parish13.9
40Grant Parish13.3
41Morehouse Parish12.4
42Beauregard Parish12.2
43Franklin Parish12.2
44De Soto Parish11.8
45Plaquemines Parish11.6
46Natchitoches Parish11.5
47Allen Parish11.5
48West Carroll Parish10.4
49Concordia Parish10.3
50St. Helena Parish10.3
51Jackson Parish10.2
52Sabine Parish9.8
53Union Parish9.3
54LaSalle Parish9.2
55Red River Parish7.5
56Claiborne Parish7.2
57Caldwell Parish7
58East Carroll Parish6.8
59Bienville Parish6.1
60Madison Parish6.1
61Winn Parish5.6
62Catahoula Parish4.8
63Tensas Parish2.6
64Cameron Parish1.7

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Louisiana by population density using official data, and cite the source.
rank_places {"indicator":"population_density","level":"province","within":"Louisiana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_density&level=province&within=Louisiana&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population density?

Orleans Parish, with 872.9 inhabitants per km² in 2020, according to the U.S. Census Bureau.

Which county has the lowest population density?

Cameron Parish, with 1.7 inhabitants per km² in 2020.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.

Population density: other rankings

Counties in Louisiana: more rankings