Top 100 counties with the highest rate of uninsured residents

Texas has the highest uninsured population of any state in the U.S. and holds 85 of the 100 counties with the most uninsured residents, according to 2019 data from the U.S. Census Bureau.

The remaining 15 counties are in Idaho, Indiana, Florida, South Dakota, Oklahoma, Ohio, Georgia and Alaska.

The data is from the U.S. Census Bureau's Small Area Health Insurance Estimates program, which was most recently conducted in 2019. The SAHIE program is the only source of data for single-year estimates of health insurance coverage for all counties nationwide.

Counties ranked by the percentage of their population under 65 with no health insurance:

1. Gaines County, Texas — 35.8 percent
2. Dallam County, Texas — 33.8 percent
3. Hidalgo County, Texas — 33.2 percent
4. Presidio County, Texas — 32.6 percent
5. Collingsworth County, Texas — 32.3 percent
6. Hudspeth County, Texas — 32 percent
7. Starr County, Texas — 31.2 percent
8. Cameron County, Texas —  30.8 percent
9. San Saba County, Texas —  30.7 percent
10. Hall County, Texas — 30.2 percent
11. Webb County, Texas — 30.2 percent
12. Clark County, Idaho — 29.7 percent
13. Hansford County, Texas — 29.6 percent
14. Mason County, Texas — 29.4 percent
15. Castro County, Texas — 29.3 percent
16. Zapata County, Texas — 29.3 percent
17. Lipscomb County, Texas — 29.2 percent
18. Cochran County, Texas — 28.5 percent
19. Maverick County, Texas — 28.5 percent
20. Menard County, Texas — 28.5 percent
21. Sherman County, Texas — 28.3 percent
22. Parmer County, Texas — 28.2 percent
23. Bailey County, Texas — 28.1 percent
24. Lagrange County, Ind. — 27.9 percent
25. Ochiltree County, Texas — 27.3 percent
26. Moore County, Texas —  27.2 percent
27. Jeff David County, Texas — 27.1 percent
28. Hendry County, Fla. — 26.9 percent
29. Haskell County, Texas — 26.9 percent
30. Lamb County, Texas — 26.9 percent
31. Mills County, Texas — 26.9 percent
32. Hardeman County, Texas — 26.7 percent
33. DeSoto County, Fla. — 26.5 percent
34. Glades County, Fla. — 26.5 percent
35. Kenedy County Texas — 26.3 percent
36. Leon County Texas — 26.3 percent
37. Swisher County, Texas — 26.3 percent
38. Terry County, Texas — 26.3 percent
39. Deaf Smith County, Texas — 26.2 percent
40. Wheeler County, Texas — 26.2 percent
41. Yoakum County, Texas — 26.2 percent
42. Floyd County, Texas — 25.9 percent
43. Edwards County, Texas — 25.8 percent
44. Shelby County, Texas — 25.8 percent
45. Caldwell County, Texas — 25.7 percent
46. Coleman County, Texas — 25.6 percent
47. Wharton County, Texas — 25.6 percent
48. Potter County, Texas — 25.3 percent
49. Gonzales County, Texas — 25.2 percent
50. Dallas County, Texas — 25.1 percent
51. Titus County, Texas — 25.1 percent
52. Knox County, Texas — 25 percent
53. Aransas County. Texas — 24.9 percent
54. Schleicher County, Texas — 24.9 percent
55. Uvalde County, Texas — 24.9 percent
56. Colorado County, Texas — 24.8 percent
57. Hamilton County, Texas — 24.8 percent
58. Pecos County, Texas — 24.8 percent
59. Jack County, Texas — 24.5 percent
60. Jackson County, S.D. — 24.4 percent
61. Culberson County, Texas — 24.3 percent
62. El Paso County, Texas — 24.3 percent
63. Throckmorton County, Texas — 24.3 percent
64. Cherokee County, Okla. — 24.2 percent
65. Gillespie County, Texas — 24.2 percent
66. Harris County, Texas — 24.2 percent
67. Harmon County, Okla. — 24.1 percent
68. Texas County, Okla. — 24.1 percent
69. Briscoe County, Texas — 24.1 percent
70. Comanche County, Texas — 24.1 percent
71. Eastland County, Texas — 24.1 percent
72. Hale County, Texas — 24.1 percent
73. Madison County — 24 percent
74. Stephens County, Texas — 24 percent
75. Gray County, Texas — 23.9 percent
76. Van Zandt County, Texas — 23.9 percent
77. Waller County, Texas — 23.9 percent
78. Atkinson County, Ga. — 23.8 percent
79. Kerr County, Texas — 23.8 percent
80. Kimble County, Texas — 23.8 percent
81. Erath County, Texas — 23.7 percent
82. Holmes County, Ohio — 23.6 percent
83. Garza County, Texas — 23.6 percent
84. Navarro County, Texas — 23.6 percent
85. Val Verde County, Texas —  23.6 percent
86. Colquitt County, Ga. — 23.5 percent
87. Hopkins County, Texas — 23.5 percent
88. Young County, Texas — 23.5 percent
89. Echols County, Ga. — 23.4 percent
90. Willacy County, Texas — 23.4 percent
91. Aleutians East Borough, Alaska — 23.3 percent
92. Hemphill County, Texas — 23.3 percent
93. Llano County, Texas — 23.3 percent
94. Dawson County, Texas — 23.2 percent
95. Henderson County, Texas — 23.2 percent
96. Owyhee County, Idaho — 23.1 percent
97. Childress County, Texas — 23.1 percent
98. Palo Pinto County, Texas — 23.1 percent
99. Bosque County, Texas — 23 percent
100. Polk County, Texas —  23 percent