Data / Rankings / Uninsured rate, ages 35 to 64 (US, ACS) / US counties

US counties by uninsured rate, ages 35 to 64 (US, ACS)

Buffalo County had the highest uninsured rate, ages 35 to 64 (US, ACS) of 3144 counties in 2023, at 55.9%. Loving County had the lowest, at 0%. The median was 10.4% and the figure for the United States was 10.6%. Source: the U.S. Census Bureau.

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Highest55.9Buffalo County
Lowest0Loving County
Median10.43144 counties
United States10.6History

Map of counties, 2023

%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Buffalo County: 55.9 %Buffalo County55.9Oglala Lakota County: 54.5 %Oglala Lakota County54.5Mellette County: 45.1 %Mellette County45.1Culberson County: 43.8 %Culberson County43.8Starr County: 40.3 %Starr County40.3Hidalgo County: 40.1 %Hidalgo County40.1Zapata County: 40.1 %Zapata County40.1Wheeler County: 39.8 %Wheeler County39.8La Salle County: 38.9 %La Salle County38.9Scotland County: 37.7 %Scotland County37.7Briscoe County: 37.7 %Briscoe County37.7San Saba County: 37.4 %San Saba County37.4Todd County: 37.4 %Todd County37.4Coleman County: 37.3 %Coleman County37.3LaGrange County: 37.3 %LaGrange County37.3Holmes County: 36.9 %Holmes County36.9Clark County: 36.7 %Clark County36.7Jeff Davis County: 36.5 %Jeff Davis County36.5Cameron County: 36.1 %Cameron County36.1Yukon-Koyukuk Census Area: 35.8 %Yukon-Koyukuk Census Area35.8Willacy County: 35.7 %Willacy County35.7Presidio County: 35.6 %Presidio County35.6Webb County: 35.6 %Webb County35.6Aleutians East Borough: 35.2 %Aleutians East Borough35.2Rolette County: 34.6 %Rolette County34.6Jim Hogg County: 34.5 %Jim Hogg County34.5Bailey County: 34.3 %Bailey County34.3Webster County: 34.3 %Webster County34.3Gaines County: 34.2 %Gaines County34.2Throckmorton County: 34.2 %Throckmorton County34.2Maverick County: 34.1 %Maverick County34.1Castro County: 33.8 %Castro County33.8Jackson County: 33.6 %Jackson County33.6Glacier County: 33.3 %Glacier County33.3Crane County: 33.2 %Crane County33.2Collingsworth County: 32.7 %Collingsworth County32.7Foard County: 32.5 %Foard County32.5Liberty County: 32.5 %Liberty County32.5Hale County: 32.5 %Hale County32.5Dimmit County: 32.4 %Dimmit County32.4Buffalo County: 55.9 %Buffalo County55.9Oglala Lakota County: 54.5 %Oglala Lakota County54.5Mellette County: 45.1 %Mellette County45.1Culberson County: 43.8 %Culberson County43.8Starr County: 40.3 %Starr County40.3Hidalgo County: 40.1 %Hidalgo County40.1Zapata County: 40.1 %Zapata County40.1Wheeler County: 39.8 %Wheeler County39.8La Salle County: 38.9 %La Salle County38.9Scotland County: 37.7 %Scotland County37.7Briscoe County: 37.7 %Briscoe County37.7San Saba County: 37.4 %San Saba County37.4Todd County: 37.4 %Todd County37.4Coleman County: 37.3 %Coleman County37.3LaGrange County: 37.3 %LaGrange County37.3Holmes County: 36.9 %Holmes County36.9Clark County: 36.7 %Clark County36.7Jeff Davis County: 36.5 %Jeff Davis County36.5Cameron County: 36.1 %Cameron County36.1Yukon-Koyukuk Census Area: 35.8 %Yukon-Koyukuk Census Area35.8Willacy County: 35.7 %Willacy County35.7Presidio County: 35.6 %Presidio County35.6Webb County: 35.6 %Webb County35.6Aleutians East Borough: 35.2 %Aleutians East Borough35.2Rolette County: 34.6 %Rolette County34.6Jim Hogg County: 34.5 %Jim Hogg County34.5Bailey County: 34.3 %Bailey County34.3Webster County: 34.3 %Webster County34.3Gaines County: 34.2 %Gaines County34.2Throckmorton County: 34.2 %Throckmorton County34.2Maverick County: 34.1 %Maverick County34.1Castro County: 33.8 %Castro County33.8Jackson County: 33.6 %Jackson County33.6Glacier County: 33.3 %Glacier County33.3Crane County: 33.2 %Crane County33.2Collingsworth County: 32.7 %Collingsworth County32.7Foard County: 32.5 %Foard County32.5Liberty County: 32.5 %Liberty County32.5Hale County: 32.5 %Hale County32.5Dimmit County: 32.4 %Dimmit County32.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Buffalo County55.9+4.5 pts
2Oglala Lakota County54.5-1.2 pts
3Mellette County45.1+1.1 pts
4Culberson County43.8+19.8 pts
5Starr County40.3-2.8 pts
6Hidalgo County40.1-1.6 pts
7Zapata County40.1+0.4 pts
8Wheeler County39.8+11.2 pts
9La Salle County38.9+5.1 pts
10Scotland County37.7+10 pts
11Briscoe County37.7-4.7 pts
12San Saba County37.4+8.4 pts
12Todd County37.4-4.8 pts
14Coleman County37.3+3.2 pts
15LaGrange County37.3-0.8 pts
16Holmes County36.9+1.1 pts
17Clark County36.7-7.1 pts
18Jeff Davis County36.5+4.2 pts
19Cameron County36.1-1.1 pts
20Yukon-Koyukuk Census Area35.8+4.6 pts
21Willacy County35.7-3.7 pts
22Presidio County35.6-8 pts
22Webb County35.6-0.3 pts
24Aleutians East Borough35.2-7.8 pts
25Rolette County34.6+0.2 pts
26Jim Hogg County34.5+6.9 pts
27Bailey County34.3+1.4 pts
27Webster County34.3+2.4 pts
29Gaines County34.2+0.9 pts
29Throckmorton County34.2-0.1 pts
31Maverick County34.1-5 pts
32Castro County33.8-5.4 pts
33Jackson County33.6+5.1 pts
34Glacier County33.3-0.1 pts
35Crane County33.2-1.3 pts
36Collingsworth County32.7-6.4 pts
37Foard County32.5+4.4 pts
38Liberty County32.5+1.2 pts
39Hale County32.5+0.8 pts
40Dimmit County32.4-2.2 pts
41Echols County32.1-2.4 pts
41Roosevelt County32.1+2.1 pts
43Ziebach County31.7-9.2 pts
44Floyd County31.6-4.6 pts
45Newton County31.5-0.9 pts
46Lake and Peninsula Borough31.3-3 pts
47Deaf Smith County31.2-1.2 pts
48Greene County30.9+2.4 pts
49McIntosh County30.8-2.9 pts
50Lamb County30.7-2.4 pts
51Caldwell County30.5+1.4 pts
52Stevens County30.5+6.8 pts
53Platte County30.4+4.9 pts
54Atkinson County30.4-2.6 pts
55Dewey County30.4-1.7 pts
56Hamilton County30.1-5 pts
57Jenkins County30+2.9 pts
58Edwards County29.7-8 pts
59Crosby County29.4+3.3 pts
60Kimball County29.3+1.5 pts
61Yakutat City and Borough29.2-12.8 pts
62Wheeler County29.1+4.4 pts
63Hudspeth County29.1-6.7 pts
64Jeff Davis County29+1.9 pts
65Duval County28.9-0.7 pts
66Jim Wells County28.8+3.8 pts
67Moore County28.6+0.4 pts
68Dallam County28.6+1.7 pts
69Custer County28.6-2.9 pts
70Hinsdale County28.6+0.2 pts
71Swisher County28.5-5.1 pts
72Young County28.5+1.7 pts
73Jones County28.4-2 pts
74Ripley County28.3-1 pts
75Ochiltree County28.2-3.1 pts
76Evans County28.1+3.5 pts
77Glades County28.1+1.7 pts
78Cimarron County28.1+0.1 pts
79Motley County28-2.1 pts
80Stanton County28-0.3 pts
81San Augustine County28-5.1 pts
82Cherokee County27.9-1.1 pts
83Swain County27.9-3.7 pts
84Berrien County27.9-2.6 pts
85Sevier County27.8+0.7 pts
86Calhoun County27.8-0.6 pts
87Crockett County27.8-7.3 pts
88Palo Pinto County27.8+3.3 pts
89Schleicher County27.6-7.2 pts
90Dixie County27.6+1.7 pts
90Marion County27.6-0.9 pts
92McDonald County27.50 pts
93McCulloch County27.4-0.1 pts
94Tyrrell County27.4+2.4 pts
95Candler County27.3+2.1 pts
96Coal County27.1-2.3 pts
97Camp County27.1-1.1 pts
98Irwin County27+3.7 pts
99Hendry County26.9+1.3 pts
100Real County26.8-9 pts
101Ware County26.8+1.8 pts
102Macon County26.7-4.9 pts
103Jefferson County26.7+1.1 pts
104Brantley County26.6+0.9 pts
104Morgan County26.6+0.7 pts
106Cochran County26.6-1.8 pts
107Dawson County26.6+0.6 pts
108Colquitt County26.5-2.7 pts
109Titus County26.5+1.4 pts
110McKinley County26.4-0.2 pts
111Mitchell County26.4-0.8 pts
112Jefferson County26.4+0.4 pts
113Hemphill County26.3-2 pts
114Copper River Census Area26.3+0.7 pts
115Reeves County26.3+3.7 pts
116San Jacinto County26.3+0.2 pts
117DeSoto County26.2-1 pts
117Hoonah-Angoon Census Area26.2+2.1 pts
119Baylor County26.2+9.6 pts
120Mitchell County26.2-2 pts
121Gooding County26.1+0.8 pts
122Hopkins County26.1-0.8 pts
123Navarro County26.1+1.7 pts
124El Paso County26-0.7 pts
125Harmon County26+4.2 pts
125Perry County26+0.1 pts
127Noxubee County26+5.1 pts
128Dallas County25.9+0.2 pts
128Shelby County25.9-1.5 pts
130Alleghany County25.7+3.9 pts
131Manassas Park city25.6+2.1 pts
132San Juan County25.6-4.2 pts
133Ben Hill County25.6-1.2 pts
134Franklin County25.5+1.9 pts
134Marshall County25.5-2.2 pts
136Mason County25.3+6.4 pts
137Caddo County25.2-0.5 pts
138Hill County25.2+0.2 pts
139Cook County25.1-0.1 pts
140Hughes County25.1-2 pts
141Grady County25.1-1 pts
142Adams County25.1+1.5 pts
143Hardeman County25+2.5 pts
144Hall County25-5.4 pts
145Comanche County25+1.7 pts
146Adair County24.9-2.8 pts
146Tyler County24.9+1.7 pts
148Menard County24.8-6.8 pts
148Roberts County24.8+1.1 pts
150Uvalde County24.7-1.5 pts
151Potter County24.7-1.8 pts
152Kimble County24.6-2.2 pts
153Harris County24.60 pts
153Trinity County24.6-2.9 pts
155Sioux County24.6-3.6 pts
156Crisp County24.6-3.6 pts
156Oregon County24.6-2.6 pts
158Wilkinson County24.5+12.8 pts
159Montague County24.5+2.3 pts
159Wayne County24.5+0.8 pts
161Pushmataha County24.4-2.2 pts
162Big Horn County24.4-1.3 pts
163Grimes County24.3+2.8 pts
164Manassas city24.3+0.5 pts
165Cherokee County24.3-2.2 pts
166Van Zandt County24.2+0.6 pts
167Dooly County24.2-0.2 pts
168Kerr County24.2-1.2 pts
169Andrews County24.2-3.2 pts
169Towns County24.2-2.9 pts
171Hockley County24.1-2 pts
172Ector County24-0.5 pts
172Hansford County24+4 pts
174Clay County24-0.6 pts
175Apache County23.9-3.6 pts
176Limestone County23.8-0.2 pts
176Wheatland County23.8-0.4 pts
178Bastrop County23.8+2.1 pts
178Clinch County23.8-2.3 pts
180Henderson County23.7-0.5 pts
181Atoka County23.6+0.4 pts
182Tillman County23.6-0.8 pts
183Hardee County23.6+0.9 pts
183Waller County23.6+4.1 pts
185Appling County23.5+0.5 pts
185Refugio County23.5+1.1 pts
187San Patricio County23.5+0.6 pts
188Wyandotte County23.5+0.9 pts
189Angelina County23.5+0.5 pts
190Jasper County23.5-1.8 pts
191Latimer County23.4-0.8 pts
192Jefferson County23.4-0.3 pts
193Bosque County23.4-1.8 pts
193Carter County23.4-0.4 pts
195Emanuel County23.3-3.8 pts
196Terry County23.3+0.3 pts
197Corson County23.2-2.7 pts
198Val Verde County23.2-1.9 pts
199DeKalb County23.1+1.7 pts
200Lyman County23.1-2.2 pts
200Tift County23.1+1.2 pts
202Live Oak County23.1+1.9 pts
203Seminole County23-2.6 pts
204Wilcox County23-1.5 pts
205Claiborne County22.9-1.7 pts
206Frio County22.9+4 pts
207Beaver County22.9-1.4 pts
208Atascosa County22.9-1.3 pts
208Blaine County22.9-0.4 pts
210Putnam County22.8-1.4 pts
211Gilmer County22.8-2.3 pts
212Nacogdoches County22.8+1.3 pts
213Big Horn County22.8-1.2 pts
213Coffee County22.8-0.2 pts
215Ozark County22.8-0.3 pts
216Nueces County22.7-0.6 pts
217Gray County22.7-2.6 pts
218Cheyenne County22.7+1.2 pts
218Menominee County22.7-6.7 pts
220Bennett County22.6+3.4 pts
220Taney County22.6-0.1 pts
222Anderson County22.6+1.6 pts
223Parmer County22.6+0.7 pts
224Gonzales County22.6-0.3 pts
225McCurtain County22.5-3.4 pts
226Bee County22.5+0.3 pts
226Polk County22.5-0 pts
228Madison County22.4-2.1 pts
229Early County22.4-1.2 pts
230Le Flore County22.3-1.2 pts
231Cibola County22.3+0.4 pts
232Yuma County22.3-0.4 pts
233Jack County22.3-2.4 pts
234Nolan County22.3-1.6 pts
235Marion County22.2+1 pts
236Terrell County22.2-5.8 pts
237Fremont County22.2-0.8 pts
237Stephens County22.20 pts
239Union County22.1+2.9 pts
240Lamar County22.1-1.3 pts
241Jackson County22.1-1.6 pts
242Lane County22.1+1.4 pts
243Jackson County22.1+0.7 pts
244Haskell County22-1.9 pts
245Tallahatchie County22-0.1 pts
246Sharkey County22-2.9 pts
247Chautauqua County22+0.4 pts
248Donley County22-4.6 pts
249Llano County21.9+0.2 pts
250Beaver County21.9+4 pts

Showing the top 250 of 3144. The Excel download has every row.

Other periods

About this ranking

People aged 35 to 64 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 35 to 64. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Coverage is what people reported at the interview, so the five-year figure averages five years of answers. People whose only coverage is the Indian Health Service count as uninsured. Active-duty military and people living in institutions are outside the universe. For single-year model-based county figures under 65, see uninsured_rate_under_65, uninsured_rate_18_64 and uninsured_rate_under_19 (SAHIE), a different source.

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. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. 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). American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs (US counties by uninsured rate, ages 35 to 64 (US, ACS), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, US counties by uninsured rate, ages 35 to 64 (US, ACS), 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/us-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. US counties by uninsured rate, ages 35 to 64 (US, ACS), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/us-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, US counties by uninsured rate, ages 35 to 64 (US, ACS), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-35-64/us-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_us_counties_by_uninsured_2023,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: US counties by uninsured rate, ages 35 to 64 (US, ACS), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/us-counties?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: US counties by uninsured rate, ages 35 to 64 (US, ACS), 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-35-64/us-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/us-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, ages 35 to 64 (US, ACS)?

Buffalo County, with 55.9% in 2023, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 35 to 64 (US, ACS)?

Loving County, with 0% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 35 to 64 (US, ACS): other rankings

US counties: more rankings