Areas with the Highest Uninsured Rates

US counties ranked by uninsured rate — the share of residents with no health insurance coverage. Uninsured rates vary significantly by state due to Medicaid expansion decisions and differ by income, employment, and immigration status. Data from US Census Bureau ACS 2023.

Ranked by Uninsured Rate. Click any location to see its full Census data profile. All figures are from the U.S. Census Bureau ACS 5-Year Estimates, 2023, so they are directly comparable across locations.

#	Location	Uninsured Rate
1	George County, Mississippi	100.0%
2	Doña Ana County, New Mexico	76.2%
3	Henry County, Indiana	56.8%
4	Lunenburg County, Virginia	54.2%
5	Greeley County, Nebraska	42.3%
6	Holmes County, Ohio	42.3%
7	Transylvania County, North Carolina	37.3%
8	Greene County, Ohio	37.3%
9	Silver Bow County, Montana	36.0%
10	Kershaw County, South Carolina	35.1%
11	Aleutians East Borough, Alaska	35.0%
12	Dawes County, Nebraska	34.9%
13	Scotland County, Missouri	33.9%
14	Dixon County, Nebraska	31.9%
15	Lake and Peninsula Borough, Alaska	31.4%
16	Jim Hogg County, Texas	31.3%
17	Otsego County, Michigan	31.1%
18	Frontier County, Nebraska	31.1%
19	Edwards County, Illinois	29.9%
20	Roosevelt County, Montana	29.6%
21	Caledonia County, Vermont	29.5%
22	Bennett County, South Dakota	29.1%
23	Guaynabo Municipio, Puerto Rico	28.8%
24	Grundy County, Illinois	28.4%
25	Webb County, Texas	28.4%
26	Davis County, Iowa	28.3%
27	Mellette County, South Dakota	28.2%
28	Iroquois County, Illinois	27.9%
29	Kent County, Rhode Island	27.2%
30	Cameron County, Texas	26.7%
31	Willacy County, Texas	26.5%
32	Effingham County, Illinois	26.5%
33	Clearwater County, Idaho	26.4%
34	Kendall County, Illinois	26.3%
35	Ziebach County, South Dakota	25.9%
36	Sterling County, Texas	25.8%
37	Liberty County, Texas	25.6%
38	Marion County, Mississippi	25.5%
39	Lamb County, Texas	25.5%
40	Caldwell County, Texas	25.1%
41	Gonzales County, Texas	25.0%
42	Tioga County, New York	24.9%
43	Morgan County, Missouri	24.6%
44	Knox County, Missouri	24.4%
45	DeKalb County, Illinois	24.4%
46	Throckmorton County, Texas	24.4%
47	Sioux County, North Dakota	24.3%
48	Floyd County, Texas	24.2%
49	Montgomery County, Tennessee	23.9%
50	Daviess County, Indiana	23.6%