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

US states by uninsured rate, ages 18 to 64 (US model-based estimate)

Texas had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 51 states in 2015, at 23.3%. Massachusetts had the lowest, at 3.9%. The median was 12.1%. Source: the U.S. Census Bureau.

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Highest23.3Texas
Lowest3.9Massachusetts
Median12.151 states

Map of states, 2015

Alabama: 15.3 %Alaska: 18.7 %Arizona: 14.6 %Arkansas: 13.6 %California: 12.1 %Colorado: 11.1 %Connecticut: 8.2 %Delaware: 8.4 %District of Columbia: 5 %Florida: 19.5 %Georgia: 19.4 %Hawaii: 5.9 %Idaho: 16 %Illinois: 10.2 %Indiana: 13.1 %Iowa: 6.8 %Kansas: 12.8 %Kentucky: 8.2 %Louisiana: 17.8 %Maine: 11.9 %Maryland: 8.8 %Massachusetts: 3.9 %Michigan: 8.7 %Minnesota: 6 %Mississippi: 19.1 %Missouri: 13.6 %Montana: 16.5 %Nebraska: 11.1 %Nevada: 16.5 %New Hampshire: 9.4 %New Jersey: 12.2 %New Mexico: 16.5 %New York: 10.2 %North Carolina: 16.2 %North Dakota: 9.1 %Ohio: 9 %Oklahoma: 19.7 %Oregon: 10 %Pennsylvania: 8.9 %Rhode Island: 7.8 %South Carolina: 16.3 %South Dakota: 13.9 %Tennessee: 15 %Texas: 23.3 %Utah: 14 %Vermont: 5.8 %Virginia: 12.4 %Washington: 9.4 %West Virginia: 8.8 %Wisconsin: 7.7 %Wyoming: 15.5 %
  • Under 8.2
  • 8.2 to 9.3
  • 9.3 to 12
  • 12 to 14
  • 14 to 17
  • 17 and over
%, 2015. 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.

All states, 2015

Texas: 23.3 %Texas23.3Oklahoma: 19.7 %Oklahoma19.7Florida: 19.5 %Florida19.5Georgia: 19.4 %Georgia19.4Mississippi: 19.1 %Mississippi19.1Alaska: 18.7 %Alaska18.7Louisiana: 17.8 %Louisiana17.8Montana: 16.5 %Montana16.5Nevada: 16.5 %Nevada16.5New Mexico: 16.5 %New Mexico16.5South Carolina: 16.3 %South Carolina16.3North Carolina: 16.2 %North Carolina16.2Idaho: 16 %Idaho16Wyoming: 15.5 %Wyoming15.5Alabama: 15.3 %Alabama15.3Tennessee: 15 %Tennessee15Arizona: 14.6 %Arizona14.6Utah: 14 %Utah14South Dakota: 13.9 %South Dakota13.9Arkansas: 13.6 %Arkansas13.6Missouri: 13.6 %Missouri13.6Indiana: 13.1 %Indiana13.1Kansas: 12.8 %Kansas12.8Virginia: 12.4 %Virginia12.4New Jersey: 12.2 %New Jersey12.2California: 12.1 %California12.1Maine: 11.9 %Maine11.9Colorado: 11.1 %Colorado11.1Nebraska: 11.1 %Nebraska11.1Illinois: 10.2 %Illinois10.2New York: 10.2 %New York10.2Oregon: 10 %Oregon10New Hampshire: 9.4 %New Hampshire9.4Washington: 9.4 %Washington9.4North Dakota: 9.1 %North Dakota9.1Ohio: 9 %Ohio9Pennsylvania: 8.9 %Pennsylvania8.9Maryland: 8.8 %Maryland8.8West Virginia: 8.8 %West Virginia8.8Michigan: 8.7 %Michigan8.7Delaware: 8.4 %Delaware8.4Connecticut: 8.2 %Connecticut8.2Kentucky: 8.2 %Kentucky8.2Rhode Island: 7.8 %Rhode Island7.8Wisconsin: 7.7 %Wisconsin7.7Iowa: 6.8 %Iowa6.8Minnesota: 6 %Minnesota6Hawaii: 5.9 %Hawaii5.9Vermont: 5.8 %Vermont5.8District of Columbia: 5 %District of Columbia5Massachusetts: 3.9 %Massachusetts3.9Texas: 23.3 %Texas23.3Oklahoma: 19.7 %Oklahoma19.7Florida: 19.5 %Florida19.5Georgia: 19.4 %Georgia19.4Mississippi: 19.1 %Mississippi19.1Alaska: 18.7 %Alaska18.7Louisiana: 17.8 %Louisiana17.8Montana: 16.5 %Montana16.5Nevada: 16.5 %Nevada16.5New Mexico: 16.5 %New Mexico16.5South Carolina: 16.3 %South Carolina16.3North Carolina: 16.2 %North Carolina16.2Idaho: 16 %Idaho16Wyoming: 15.5 %Wyoming15.5Alabama: 15.3 %Alabama15.3Tennessee: 15 %Tennessee15Arizona: 14.6 %Arizona14.6Utah: 14 %Utah14South Dakota: 13.9 %South Dakota13.9Arkansas: 13.6 %Arkansas13.6Missouri: 13.6 %Missouri13.6Indiana: 13.1 %Indiana13.1Kansas: 12.8 %Kansas12.8Virginia: 12.4 %Virginia12.4New Jersey: 12.2 %New Jersey12.2California: 12.1 %California12.1Maine: 11.9 %Maine11.9Colorado: 11.1 %Colorado11.1Nebraska: 11.1 %Nebraska11.1Illinois: 10.2 %Illinois10.2New York: 10.2 %New York10.2Oregon: 10 %Oregon10New Hampshire: 9.4 %New Hampshire9.4Washington: 9.4 %Washington9.4North Dakota: 9.1 %North Dakota9.1Ohio: 9 %Ohio9Pennsylvania: 8.9 %Pennsylvania8.9Maryland: 8.8 %Maryland8.8West Virginia: 8.8 %West Virginia8.8Michigan: 8.7 %Michigan8.7Delaware: 8.4 %Delaware8.4Connecticut: 8.2 %Connecticut8.2Kentucky: 8.2 %Kentucky8.2Rhode Island: 7.8 %Rhode Island7.8Wisconsin: 7.7 %Wisconsin7.7Iowa: 6.8 %Iowa6.8Minnesota: 6 %Minnesota6Hawaii: 5.9 %Hawaii5.9Vermont: 5.8 %Vermont5.8District of Columbia: 5 %District of Columbia5Massachusetts: 3.9 %Massachusetts3.9
%. 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

RankStates2015 (%)Change on 2014
1Texas23.3-2.5 pts
2Oklahoma19.7-2 pts
3Florida19.5-4.4 pts
4Georgia19.4-2.8 pts
5Mississippi19.1-2.8 pts
6Alaska18.7-3.5 pts
7Louisiana17.8-3.7 pts
8Montana16.5-3.5 pts
8Nevada16.5-3.8 pts
8New Mexico16.5-4.5 pts
11South Carolina16.3-3.6 pts
12North Carolina16.2-2.7 pts
13Idaho16-3.1 pts
14Wyoming15.5-1.6 pts
15Alabama15.3-2.8 pts
16Tennessee15-2.4 pts
17Arizona14.6-3.9 pts
18Utah14-2.3 pts
19South Dakota13.9-0.1 pts
20Arkansas13.6-3.8 pts
20Missouri13.6-2.6 pts
22Indiana13.1-3.5 pts
23Kansas12.8-1.6 pts
24Virginia12.4-2.4 pts
25New Jersey12.2-3.2 pts
26California12.1-5.2 pts
27Maine11.9-2.4 pts
28Colorado11.1-2.9 pts
28Nebraska11.1-2.4 pts
30Illinois10.2-3.8 pts
30New York10.2-2.2 pts
32Oregon10-3.9 pts
33New Hampshire9.4-3.8 pts
33Washington9.4-3.3 pts
35North Dakota9.1-1.1 pts
36Ohio9-2.8 pts
37Pennsylvania8.9-3 pts
38Maryland8.8-2.2 pts
38West Virginia8.8-4.2 pts
40Michigan8.7-3.7 pts
41Delaware8.4-2.4 pts
42Connecticut8.2-1.4 pts
42Kentucky8.2-3.7 pts
44Rhode Island7.8-2.5 pts
45Wisconsin7.7-2.4 pts
46Iowa6.8-2.1 pts
47Minnesota6-1.9 pts
48Hawaii5.9-1.2 pts
49Vermont5.8-1.5 pts
50District of Columbia5-2 pts
51Massachusetts3.9-0.6 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 states 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-2015-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 (US states by uninsured rate, ages 18 to 64 (US model-based estimate), 2015) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-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, US states by uninsured rate, ages 18 to 64 (US model-based estimate), 2015. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/us-states?period=2015. 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. US states by uninsured rate, ages 18 to 64 (US model-based estimate), 2015. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/us-states?period=2015.

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, US states by uninsured rate, ages 18 to 64 (US model-based estimate), 2015 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/us-states?period=2015 (Accessed: 12 October 2026).

BibTeX
@misc{census_us_states_by_uninsured_2015,
  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: US states by uninsured rate, ages 18 to 64 (US model-based estimate), 2015}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/us-states?period=2015. 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-2015-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: US states by uninsured rate, ages 18 to 64 (US model-based estimate), 2015
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-2015-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/us-states?period=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/us-states?period=2015.
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-2015-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

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

Texas, with 23.3% in 2015, according to the U.S. Census Bureau.

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

Massachusetts, with 3.9% in 2015.

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

US states: more rankings