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

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

Holmes County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 88 counties in 2018, at 24.4%. Delaware County had the lowest, at 5.3%. The median was 8.6% and the figure for Ohio was 8.9%. Source: the U.S. Census Bureau.

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Highest24.4Holmes County
Lowest5.3Delaware County
Median8.688 counties
Ohio8.9History

Map of counties, 2018

Adams County: 11.5 %Allen County: 8.4 %Ashland County: 9.6 %Ashtabula County: 10.6 %Athens County: 10 %Auglaize County: 6.9 %Belmont County: 8.3 %Brown County: 9 %Butler County: 8.1 %Carroll County: 9.7 %Champaign County: 7.9 %Clark County: 9.9 %Clermont County: 8 %Clinton County: 8.4 %Columbiana County: 10.3 %Coshocton County: 11 %Crawford County: 8.5 %Cuyahoga County: 8.6 %Darke County: 9.8 %Defiance County: 7.6 %Delaware County: 5.3 %Erie County: 7.2 %Fairfield County: 7.4 %Fayette County: 8.8 %Franklin County: 10.5 %Fulton County: 8.2 %Gallia County: 10.7 %Geauga County: 8.9 %Greene County: 7.3 %Guernsey County: 10.5 %Hamilton County: 8.3 %Hancock County: 7.6 %Hardin County: 9 %Harrison County: 8.9 %Henry County: 7.2 %Highland County: 11.4 %Hocking County: 9.2 %Holmes County: 24.4 %Huron County: 9.7 %Jackson County: 9.9 %Jefferson County: 7.8 %Knox County: 9.3 %Lake County: 8.1 %Lawrence County: 8.6 %Licking County: 8.2 %Logan County: 8.2 %Lorain County: 8.5 %Lucas County: 10.4 %Madison County: 8.1 %Mahoning County: 8 %Marion County: 8.4 %Medina County: 5.8 %Meigs County: 9.8 %Mercer County: 7.3 %Miami County: 8.7 %Monroe County: 9.8 %Montgomery County: 9.5 %Morgan County: 9.4 %Morrow County: 9.6 %Muskingum County: 9 %Noble County: 9.2 %Ottawa County: 7.8 %Paulding County: 8.6 %Perry County: 8.8 %Pickaway County: 7.7 %Pike County: 9.6 %Portage County: 8.3 %Preble County: 9.3 %Putnam County: 6.7 %Richland County: 9.5 %Ross County: 9 %Sandusky County: 7.4 %Scioto County: 9.6 %Seneca County: 7.6 %Shelby County: 8 %Stark County: 9.5 %Summit County: 8.6 %Trumbull County: 9.4 %Tuscarawas County: 10.6 %Union County: 6.1 %Van Wert County: 7.9 %Vinton County: 10.5 %Warren County: 6.3 %Washington County: 9.5 %Wayne County: 12.5 %Williams County: 8.1 %Wood County: 7.2 %Wyandot County: 8.2 %
  • Under 7.6
  • 7.6 to 8.2
  • 8.2 to 8.6
  • 8.6 to 9.4
  • 9.4 to 9.9
  • 9.9 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

Holmes County: 24.4 %Holmes County24.4Wayne County: 12.5 %Wayne County12.5Adams County: 11.5 %Adams County11.5Highland County: 11.4 %Highland County11.4Coshocton County: 11 %Coshocton County11Gallia County: 10.7 %Gallia County10.7Ashtabula County: 10.6 %Ashtabula County10.6Tuscarawas County: 10.6 %Tuscarawas County10.6Franklin County: 10.5 %Franklin County10.5Guernsey County: 10.5 %Guernsey County10.5Vinton County: 10.5 %Vinton County10.5Lucas County: 10.4 %Lucas County10.4Columbiana County: 10.3 %Columbiana County10.3Athens County: 10 %Athens County10Clark County: 9.9 %Clark County9.9Jackson County: 9.9 %Jackson County9.9Darke County: 9.8 %Darke County9.8Meigs County: 9.8 %Meigs County9.8Monroe County: 9.8 %Monroe County9.8Carroll County: 9.7 %Carroll County9.7Huron County: 9.7 %Huron County9.7Ashland County: 9.6 %Ashland County9.6Morrow County: 9.6 %Morrow County9.6Pike County: 9.6 %Pike County9.6Scioto County: 9.6 %Scioto County9.6Montgomery County: 9.5 %Montgomery County9.5Richland County: 9.5 %Richland County9.5Stark County: 9.5 %Stark County9.5Washington County: 9.5 %Washington County9.5Morgan County: 9.4 %Morgan County9.4Trumbull County: 9.4 %Trumbull County9.4Knox County: 9.3 %Knox County9.3Preble County: 9.3 %Preble County9.3Hocking County: 9.2 %Hocking County9.2Noble County: 9.2 %Noble County9.2Brown County: 9 %Brown County9Hardin County: 9 %Hardin County9Muskingum County: 9 %Muskingum County9Ross County: 9 %Ross County9Geauga County: 8.9 %Geauga County8.9Holmes County: 24.4 %Holmes County24.4Wayne County: 12.5 %Wayne County12.5Adams County: 11.5 %Adams County11.5Highland County: 11.4 %Highland County11.4Coshocton County: 11 %Coshocton County11Gallia County: 10.7 %Gallia County10.7Ashtabula County: 10.6 %Ashtabula County10.6Tuscarawas County: 10.6 %Tuscarawas County10.6Franklin County: 10.5 %Franklin County10.5Guernsey County: 10.5 %Guernsey County10.5Vinton County: 10.5 %Vinton County10.5Lucas County: 10.4 %Lucas County10.4Columbiana County: 10.3 %Columbiana County10.3Athens County: 10 %Athens County10Clark County: 9.9 %Clark County9.9Jackson County: 9.9 %Jackson County9.9Darke County: 9.8 %Darke County9.8Meigs County: 9.8 %Meigs County9.8Monroe County: 9.8 %Monroe County9.8Carroll County: 9.7 %Carroll County9.7Huron County: 9.7 %Huron County9.7Ashland County: 9.6 %Ashland County9.6Morrow County: 9.6 %Morrow County9.6Pike County: 9.6 %Pike County9.6Scioto County: 9.6 %Scioto County9.6Montgomery County: 9.5 %Montgomery County9.5Richland County: 9.5 %Richland County9.5Stark County: 9.5 %Stark County9.5Washington County: 9.5 %Washington County9.5Morgan County: 9.4 %Morgan County9.4Trumbull County: 9.4 %Trumbull County9.4Knox County: 9.3 %Knox County9.3Preble County: 9.3 %Preble County9.3Hocking County: 9.2 %Hocking County9.2Noble County: 9.2 %Noble County9.2Brown County: 9 %Brown County9Hardin County: 9 %Hardin County9Muskingum County: 9 %Muskingum County9Ross County: 9 %Ross County9Geauga County: 8.9 %Geauga County8.9
%. 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

RankCounties2018 (%)Change on 2017
1Holmes County24.4+0.4 pts
2Wayne County12.5+0.9 pts
3Adams County11.5+1.4 pts
4Highland County11.4+1.1 pts
5Coshocton County11+1.3 pts
6Gallia County10.7+0.9 pts
7Ashtabula County10.6+1.3 pts
7Tuscarawas County10.6+1.7 pts
9Franklin County10.5+1 pts
9Guernsey County10.5+1 pts
9Vinton County10.5+1 pts
12Lucas County10.4+1.5 pts
13Columbiana County10.3+1.6 pts
14Athens County10-0.3 pts
15Clark County9.9+1.4 pts
15Jackson County9.9+0.8 pts
17Darke County9.8+1.7 pts
17Meigs County9.8+0.7 pts
17Monroe County9.8+0.3 pts
20Carroll County9.7+1.1 pts
20Huron County9.7+1.1 pts
22Ashland County9.6+0.3 pts
22Morrow County9.6+1.1 pts
22Pike County9.6+1 pts
22Scioto County9.6+1.6 pts
26Montgomery County9.5+0.8 pts
26Richland County9.5+0.3 pts
26Stark County9.5+1.1 pts
26Washington County9.5+1.3 pts
30Morgan County9.4+0.6 pts
30Trumbull County9.4+0.6 pts
32Knox County9.3+0.9 pts
32Preble County9.3+1.9 pts
34Hocking County9.2+1.4 pts
34Noble County9.2+0.6 pts
36Brown County9+0.5 pts
36Hardin County9+0.9 pts
36Muskingum County9+0.5 pts
36Ross County9+1 pts
40Geauga County8.9+0.1 pts
40Harrison County8.9+0.2 pts
42Fayette County8.8+1 pts
42Perry County8.8+0.7 pts
44Miami County8.7+1.3 pts
45Cuyahoga County8.6+1 pts
45Lawrence County8.6+0.5 pts
45Paulding County8.6+0.5 pts
45Summit County8.6+1 pts
49Crawford County8.5+0.4 pts
49Lorain County8.5+1.3 pts
51Allen County8.4-0.3 pts
51Clinton County8.4+0.5 pts
51Marion County8.4+0.6 pts
54Belmont County8.3+0.9 pts
54Hamilton County8.3+0.5 pts
54Portage County8.3+0.5 pts
57Fulton County8.2+0.9 pts
57Licking County8.2+0.3 pts
57Logan County8.2+0.4 pts
57Wyandot County8.2+0.7 pts
61Butler County8.1+0.2 pts
61Lake County8.1+1 pts
61Madison County8.1+0.8 pts
61Williams County8.1+0.8 pts
65Clermont County8+1.3 pts
65Mahoning County8+0.1 pts
65Shelby County8+0.9 pts
68Champaign County7.9+0.4 pts
68Van Wert County7.9+0.6 pts
70Jefferson County7.8-0.4 pts
70Ottawa County7.8+0.6 pts
72Pickaway County7.7+0.4 pts
73Defiance County7.6-0.1 pts
73Hancock County7.6+0.7 pts
73Seneca County7.6+0.1 pts
76Fairfield County7.4+0.9 pts
76Sandusky County7.4-0.2 pts
78Greene County7.3+0.6 pts
78Mercer County7.3+0.3 pts
80Erie County7.2+0.2 pts
80Henry County7.2+0.2 pts
80Wood County7.2+0.9 pts
83Auglaize County6.9+0.5 pts
84Putnam County6.7+0.6 pts
85Warren County6.3+0.5 pts
86Union County6.1+0.4 pts
87Medina County5.8-0.4 pts
88Delaware County5.3+0.4 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 Ohio 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 Ohio 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/ohio-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 Ohio 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/ohio-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 Ohio 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/ohio-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_ohio_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 Ohio 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/ohio-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 Ohio 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/ohio-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/ohio-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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Rank Counties in Ohio by uninsured rate, ages 18 to 64 (US model-based estimate) using official data, and cite the source.
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Questions

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

Holmes County, with 24.4% in 2018, according to the U.S. Census Bureau.

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

Delaware County, with 5.3% 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 Ohio: more rankings