Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Louisiana

Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate)

Terrebonne Parish had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 64 counties in 2018, at 15.2%. St. James Parish had the lowest, at 8.2%. The median was 11.9% and the figure for Louisiana was 11.7%. Source: the U.S. Census Bureau.

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Highest15.2Terrebonne Parish
Lowest8.2St. James Parish
Median11.964 counties
Louisiana11.7History

Map of counties, 2018

Acadia Parish: 12.5 %Allen Parish: 11.9 %Ascension Parish: 8.4 %Assumption Parish: 11.4 %Avoyelles Parish: 12.8 %Beauregard Parish: 12.2 %Bienville Parish: 9.8 %Bossier Parish: 9.9 %Caddo Parish: 10 %Calcasieu Parish: 11.5 %Caldwell Parish: 13.5 %Cameron Parish: 11.7 %Catahoula Parish: 11.8 %Claiborne Parish: 13 %Concordia Parish: 12.2 %De Soto Parish: 13 %East Baton Rouge Parish: 10.8 %East Carroll Parish: 10.1 %East Feliciana Parish: 9.7 %Evangeline Parish: 12.9 %Franklin Parish: 13.2 %Grant Parish: 10.7 %Iberia Parish: 13.2 %Iberville Parish: 10.4 %Jackson Parish: 11.9 %Jefferson Parish: 15.1 %Jefferson Davis Parish: 12.9 %Lafayette Parish: 10.3 %Lafourche Parish: 12.9 %LaSalle Parish: 13.7 %Lincoln Parish: 13.1 %Livingston Parish: 11.3 %Madison Parish: 10.5 %Morehouse Parish: 12.2 %Natchitoches Parish: 12.2 %Orleans Parish: 11.5 %Ouachita Parish: 11.3 %Plaquemines Parish: 12.9 %Pointe Coupee Parish: 11.5 %Rapides Parish: 11.9 %Red River Parish: 10.7 %Richland Parish: 12 %Sabine Parish: 14.7 %St. Bernard Parish: 13.3 %St. Charles Parish: 8.5 %St. Helena Parish: 13.2 %St. James Parish: 8.2 %St. John the Baptist Parish: 10 %St. Landry Parish: 13.1 %St. Martin Parish: 11.9 %St. Mary Parish: 13.1 %St. Tammany Parish: 10.2 %Tangipahoa Parish: 11.2 %Tensas Parish: 12.8 %Terrebonne Parish: 15.2 %Union Parish: 11.4 %Vermilion Parish: 14 %Vernon Parish: 10.7 %Washington Parish: 12.5 %Webster Parish: 11.9 %West Baton Rouge Parish: 8.4 %West Carroll Parish: 13.2 %West Feliciana Parish: 8.6 %Winn Parish: 10.7 %
  • Under 10
  • 10 to 11
  • 11 to 12
  • 12 to 13
  • 13 and over
%, 2018. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Terrebonne Parish: 15.2 %Terrebonne Parish15.2Jefferson Parish: 15.1 %Jefferson Parish15.1Sabine Parish: 14.7 %Sabine Parish14.7Vermilion Parish: 14 %Vermilion Parish14LaSalle Parish: 13.7 %LaSalle Parish13.7Caldwell Parish: 13.5 %Caldwell Parish13.5St. Bernard Parish: 13.3 %St. Bernard Parish13.3Franklin Parish: 13.2 %Franklin Parish13.2Iberia Parish: 13.2 %Iberia Parish13.2St. Helena Parish: 13.2 %St. Helena Parish13.2West Carroll Parish: 13.2 %West Carroll Parish13.2Lincoln Parish: 13.1 %Lincoln Parish13.1St. Landry Parish: 13.1 %St. Landry Parish13.1St. Mary Parish: 13.1 %St. Mary Parish13.1Claiborne Parish: 13 %Claiborne Parish13De Soto Parish: 13 %De Soto Parish13Evangeline Parish: 12.9 %Evangeline Parish12.9Jefferson Davis Parish: 12.9 %Jefferson Davis Parish12.9Lafourche Parish: 12.9 %Lafourche Parish12.9Plaquemines Parish: 12.9 %Plaquemines Parish12.9Avoyelles Parish: 12.8 %Avoyelles Parish12.8Tensas Parish: 12.8 %Tensas Parish12.8Acadia Parish: 12.5 %Acadia Parish12.5Washington Parish: 12.5 %Washington Parish12.5Beauregard Parish: 12.2 %Beauregard Parish12.2Concordia Parish: 12.2 %Concordia Parish12.2Morehouse Parish: 12.2 %Morehouse Parish12.2Natchitoches Parish: 12.2 %Natchitoches Parish12.2Richland Parish: 12 %Richland Parish12Allen Parish: 11.9 %Allen Parish11.9Jackson Parish: 11.9 %Jackson Parish11.9Rapides Parish: 11.9 %Rapides Parish11.9St. Martin Parish: 11.9 %St. Martin Parish11.9Webster Parish: 11.9 %Webster Parish11.9Catahoula Parish: 11.8 %Catahoula Parish11.8Cameron Parish: 11.7 %Cameron Parish11.7Calcasieu Parish: 11.5 %Calcasieu Parish11.5Orleans Parish: 11.5 %Orleans Parish11.5Pointe Coupee Parish: 11.5 %Pointe Coupee Parish11.5Assumption Parish: 11.4 %Assumption Parish11.4Terrebonne Parish: 15.2 %Terrebonne Parish15.2Jefferson Parish: 15.1 %Jefferson Parish15.1Sabine Parish: 14.7 %Sabine Parish14.7Vermilion Parish: 14 %Vermilion Parish14LaSalle Parish: 13.7 %LaSalle Parish13.7Caldwell Parish: 13.5 %Caldwell Parish13.5St. Bernard Parish: 13.3 %St. Bernard Parish13.3Franklin Parish: 13.2 %Franklin Parish13.2Iberia Parish: 13.2 %Iberia Parish13.2St. Helena Parish: 13.2 %St. Helena Parish13.2West Carroll Parish: 13.2 %West Carroll Parish13.2Lincoln Parish: 13.1 %Lincoln Parish13.1St. Landry Parish: 13.1 %St. Landry Parish13.1St. Mary Parish: 13.1 %St. Mary Parish13.1Claiborne Parish: 13 %Claiborne Parish13De Soto Parish: 13 %De Soto Parish13Evangeline Parish: 12.9 %Evangeline Parish12.9Jefferson Davis Parish: 12.9 %Jefferson Davis Parish12.9Lafourche Parish: 12.9 %Lafourche Parish12.9Plaquemines Parish: 12.9 %Plaquemines Parish12.9Avoyelles Parish: 12.8 %Avoyelles Parish12.8Tensas Parish: 12.8 %Tensas Parish12.8Acadia Parish: 12.5 %Acadia Parish12.5Washington Parish: 12.5 %Washington Parish12.5Beauregard Parish: 12.2 %Beauregard Parish12.2Concordia Parish: 12.2 %Concordia Parish12.2Morehouse Parish: 12.2 %Morehouse Parish12.2Natchitoches Parish: 12.2 %Natchitoches Parish12.2Richland Parish: 12 %Richland Parish12Allen Parish: 11.9 %Allen Parish11.9Jackson Parish: 11.9 %Jackson Parish11.9Rapides Parish: 11.9 %Rapides Parish11.9St. Martin Parish: 11.9 %St. Martin Parish11.9Webster Parish: 11.9 %Webster Parish11.9Catahoula Parish: 11.8 %Catahoula Parish11.8Cameron Parish: 11.7 %Cameron Parish11.7Calcasieu Parish: 11.5 %Calcasieu Parish11.5Orleans Parish: 11.5 %Orleans Parish11.5Pointe Coupee Parish: 11.5 %Pointe Coupee Parish11.5Assumption Parish: 11.4 %Assumption Parish11.4
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Terrebonne Parish15.2-0.2 pts
2Jefferson Parish15.1+0.5 pts
3Sabine Parish14.7-1.4 pts
4Vermilion Parish14+0.1 pts
5LaSalle Parish13.7-1.9 pts
6Caldwell Parish13.5-0.7 pts
7St. Bernard Parish13.3-0.1 pts
8Franklin Parish13.2-2.1 pts
8Iberia Parish13.2-0.3 pts
8St. Helena Parish13.2+0.6 pts
8West Carroll Parish13.2-0.5 pts
12Lincoln Parish13.1+1.1 pts
12St. Landry Parish13.10 pts
12St. Mary Parish13.1-0.5 pts
15Claiborne Parish13-1.2 pts
15De Soto Parish13+0.7 pts
17Evangeline Parish12.9-0.2 pts
17Jefferson Davis Parish12.9-0.7 pts
17Lafourche Parish12.9-2.1 pts
17Plaquemines Parish12.9-2 pts
21Avoyelles Parish12.8-0.7 pts
21Tensas Parish12.8-1.5 pts
23Acadia Parish12.5-1.5 pts
23Washington Parish12.5-0.8 pts
25Beauregard Parish12.20 pts
25Concordia Parish12.2-1 pts
25Morehouse Parish12.2+0.2 pts
25Natchitoches Parish12.2-0.3 pts
29Richland Parish12-0.7 pts
30Allen Parish11.9-0.4 pts
30Jackson Parish11.9-0.9 pts
30Rapides Parish11.9-0.6 pts
30St. Martin Parish11.9-0.9 pts
30Webster Parish11.9-0.2 pts
35Catahoula Parish11.8-1.7 pts
36Cameron Parish11.7+0.2 pts
37Calcasieu Parish11.50 pts
37Orleans Parish11.5-0.5 pts
37Pointe Coupee Parish11.5-0.8 pts
40Assumption Parish11.4-1.5 pts
40Union Parish11.4-1.5 pts
42Livingston Parish11.3-0.1 pts
42Ouachita Parish11.3+0.4 pts
44Tangipahoa Parish11.2-2 pts
45East Baton Rouge Parish10.80 pts
46Grant Parish10.7-1.3 pts
46Red River Parish10.7-0.4 pts
46Vernon Parish10.7-0.1 pts
46Winn Parish10.7-1.2 pts
50Madison Parish10.5-1.7 pts
51Iberville Parish10.4-0.4 pts
52Lafayette Parish10.3-2.3 pts
53St. Tammany Parish10.2-1.2 pts
54East Carroll Parish10.1-1.3 pts
55Caddo Parish10-1.3 pts
55St. John the Baptist Parish10-1.1 pts
57Bossier Parish9.9-1.4 pts
58Bienville Parish9.8-1.7 pts
59East Feliciana Parish9.7-0.2 pts
60West Feliciana Parish8.6+0.2 pts
61St. Charles Parish8.5-0.9 pts
62Ascension Parish8.4-0.9 pts
62West Baton Rouge Parish8.4-1 pts
64St. James Parish8.2-0.7 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

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. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate), 2018) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate), 2018. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/louisiana-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate), 2018. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/louisiana-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate), 2018 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/louisiana-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_louisiana_by_2018,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate), 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/louisiana-counties?period=2018. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Louisiana by uninsured rate, ages 18 to 64 (US model-based estimate), 2018
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/louisiana-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/louisiana-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, ages 18 to 64 (US model-based estimate)?

Terrebonne Parish, with 15.2% in 2018, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

St. James Parish, with 8.2% in 2018.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in Louisiana: more rankings