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

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

Mackinac County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 83 counties in 2018, at 14.1%. Monroe County had the lowest, at 5.5%. The median was 8.7% and the figure for Michigan was 7.7%. Source: the U.S. Census Bureau.

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Highest14.1Mackinac County
Lowest5.5Monroe County
Median8.783 counties
Michigan7.7History

Map of counties, 2018

Alcona County: 9.7 %Alger County: 8.7 %Allegan County: 6.4 %Alpena County: 7.2 %Antrim County: 9.3 %Arenac County: 9.3 %Baraga County: 9.4 %Barry County: 6.9 %Bay County: 7.8 %Benzie County: 9 %Berrien County: 10 %Branch County: 9.6 %Calhoun County: 7.3 %Cass County: 8.8 %Charlevoix County: 8.7 %Cheboygan County: 10 %Chippewa County: 11.5 %Clare County: 10 %Clinton County: 6 %Crawford County: 8.5 %Delta County: 7 %Dickinson County: 6.6 %Eaton County: 5.9 %Emmet County: 9.4 %Genesee County: 7.2 %Gladwin County: 9.3 %Gogebic County: 9.1 %Grand Traverse County: 8.1 %Gratiot County: 6.9 %Hillsdale County: 8.8 %Houghton County: 8.5 %Huron County: 8.7 %Ingham County: 7.4 %Ionia County: 8 %Iosco County: 9.2 %Iron County: 8.6 %Isabella County: 9.8 %Jackson County: 7.9 %Kalamazoo County: 7.2 %Kalkaska County: 10 %Kent County: 8.1 %Keweenaw County: 6.9 %Lake County: 9.8 %Lapeer County: 9.7 %Leelanau County: 9.9 %Lenawee County: 7 %Livingston County: 5.5 %Luce County: 9.3 %Mackinac County: 14.1 %Macomb County: 7.5 %Manistee County: 9 %Marquette County: 7 %Mason County: 8.3 %Mecosta County: 9.4 %Menominee County: 7.9 %Midland County: 6.4 %Missaukee County: 11.1 %Monroe County: 5.5 %Montcalm County: 8.5 %Montmorency County: 9.2 %Muskegon County: 7.3 %Newaygo County: 8.7 %Oakland County: 6.5 %Oceana County: 12.8 %Ogemaw County: 9.3 %Ontonagon County: 8.9 %Osceola County: 10 %Oscoda County: 10.9 %Otsego County: 8.3 %Ottawa County: 7.3 %Presque Isle County: 9.2 %Roscommon County: 9.1 %Saginaw County: 7 %St. Clair County: 7 %St. Joseph County: 9.7 %Sanilac County: 8.9 %Schoolcraft County: 10.3 %Shiawassee County: 7.1 %Tuscola County: 8.6 %Van Buren County: 10.5 %Washtenaw County: 6.4 %Wayne County: 8.5 %Wexford County: 8.4 %
  • Under 7
  • 7 to 7.9
  • 7.9 to 8.7
  • 8.7 to 9.2
  • 9.2 to 9.8
  • 9.8 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

Mackinac County: 14.1 %Mackinac County14.1Oceana County: 12.8 %Oceana County12.8Chippewa County: 11.5 %Chippewa County11.5Missaukee County: 11.1 %Missaukee County11.1Oscoda County: 10.9 %Oscoda County10.9Van Buren County: 10.5 %Van Buren County10.5Schoolcraft County: 10.3 %Schoolcraft County10.3Berrien County: 10 %Berrien County10Cheboygan County: 10 %Cheboygan County10Clare County: 10 %Clare County10Kalkaska County: 10 %Kalkaska County10Osceola County: 10 %Osceola County10Leelanau County: 9.9 %Leelanau County9.9Isabella County: 9.8 %Isabella County9.8Lake County: 9.8 %Lake County9.8Alcona County: 9.7 %Alcona County9.7Lapeer County: 9.7 %Lapeer County9.7St. Joseph County: 9.7 %St. Joseph County9.7Branch County: 9.6 %Branch County9.6Baraga County: 9.4 %Baraga County9.4Emmet County: 9.4 %Emmet County9.4Mecosta County: 9.4 %Mecosta County9.4Antrim County: 9.3 %Antrim County9.3Arenac County: 9.3 %Arenac County9.3Gladwin County: 9.3 %Gladwin County9.3Luce County: 9.3 %Luce County9.3Ogemaw County: 9.3 %Ogemaw County9.3Iosco County: 9.2 %Iosco County9.2Montmorency County: 9.2 %Montmorency County9.2Presque Isle County: 9.2 %Presque Isle County9.2Gogebic County: 9.1 %Gogebic County9.1Roscommon County: 9.1 %Roscommon County9.1Benzie County: 9 %Benzie County9Manistee County: 9 %Manistee County9Ontonagon County: 8.9 %Ontonagon County8.9Sanilac County: 8.9 %Sanilac County8.9Cass County: 8.8 %Cass County8.8Hillsdale County: 8.8 %Hillsdale County8.8Alger County: 8.7 %Alger County8.7Charlevoix County: 8.7 %Charlevoix County8.7Mackinac County: 14.1 %Mackinac County14.1Oceana County: 12.8 %Oceana County12.8Chippewa County: 11.5 %Chippewa County11.5Missaukee County: 11.1 %Missaukee County11.1Oscoda County: 10.9 %Oscoda County10.9Van Buren County: 10.5 %Van Buren County10.5Schoolcraft County: 10.3 %Schoolcraft County10.3Berrien County: 10 %Berrien County10Cheboygan County: 10 %Cheboygan County10Clare County: 10 %Clare County10Kalkaska County: 10 %Kalkaska County10Osceola County: 10 %Osceola County10Leelanau County: 9.9 %Leelanau County9.9Isabella County: 9.8 %Isabella County9.8Lake County: 9.8 %Lake County9.8Alcona County: 9.7 %Alcona County9.7Lapeer County: 9.7 %Lapeer County9.7St. Joseph County: 9.7 %St. Joseph County9.7Branch County: 9.6 %Branch County9.6Baraga County: 9.4 %Baraga County9.4Emmet County: 9.4 %Emmet County9.4Mecosta County: 9.4 %Mecosta County9.4Antrim County: 9.3 %Antrim County9.3Arenac County: 9.3 %Arenac County9.3Gladwin County: 9.3 %Gladwin County9.3Luce County: 9.3 %Luce County9.3Ogemaw County: 9.3 %Ogemaw County9.3Iosco County: 9.2 %Iosco County9.2Montmorency County: 9.2 %Montmorency County9.2Presque Isle County: 9.2 %Presque Isle County9.2Gogebic County: 9.1 %Gogebic County9.1Roscommon County: 9.1 %Roscommon County9.1Benzie County: 9 %Benzie County9Manistee County: 9 %Manistee County9Ontonagon County: 8.9 %Ontonagon County8.9Sanilac County: 8.9 %Sanilac County8.9Cass County: 8.8 %Cass County8.8Hillsdale County: 8.8 %Hillsdale County8.8Alger County: 8.7 %Alger County8.7Charlevoix County: 8.7 %Charlevoix County8.7
%. 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
1Mackinac County14.1+1.2 pts
2Oceana County12.8+1.7 pts
3Chippewa County11.5+0.4 pts
4Missaukee County11.1+2.3 pts
5Oscoda County10.9+0.6 pts
6Van Buren County10.5+0.5 pts
7Schoolcraft County10.3+0.6 pts
8Berrien County10+1.4 pts
8Cheboygan County10+0.4 pts
8Clare County10+0.6 pts
8Kalkaska County10+0.2 pts
8Osceola County10+0.8 pts
13Leelanau County9.9+0.6 pts
14Isabella County9.8+1.1 pts
14Lake County9.8+0.6 pts
16Alcona County9.7-0.2 pts
16Lapeer County9.7+2.4 pts
16St. Joseph County9.7+0.2 pts
19Branch County9.6-0.2 pts
20Baraga County9.4+0.2 pts
20Emmet County9.4+0.5 pts
20Mecosta County9.4+2 pts
23Antrim County9.3+0.3 pts
23Arenac County9.3+0.1 pts
23Gladwin County9.30 pts
23Luce County9.3+0.4 pts
23Ogemaw County9.3+0.8 pts
28Iosco County9.2+0.3 pts
28Montmorency County9.2+0.9 pts
28Presque Isle County9.2+0.6 pts
31Gogebic County9.1+0.2 pts
31Roscommon County9.1+0.5 pts
33Benzie County9+0.7 pts
33Manistee County9+0.3 pts
35Ontonagon County8.9-0.4 pts
35Sanilac County8.9+0.6 pts
37Cass County8.8+0.5 pts
37Hillsdale County8.8+0.4 pts
39Alger County8.70 pts
39Charlevoix County8.7+1.3 pts
39Huron County8.7+1.1 pts
39Newaygo County8.7+0.1 pts
43Iron County8.6+0.4 pts
43Tuscola County8.6+1.6 pts
45Crawford County8.5+0.9 pts
45Houghton County8.5+0.4 pts
45Montcalm County8.5+0.2 pts
45Wayne County8.50 pts
49Wexford County8.4+0.1 pts
50Mason County8.3+0.8 pts
50Otsego County8.3+1.2 pts
52Grand Traverse County8.1+0.9 pts
52Kent County8.1+0.5 pts
54Ionia County8+1 pts
55Jackson County7.9+1.1 pts
55Menominee County7.9-0.1 pts
57Bay County7.8+0.6 pts
58Macomb County7.5-0.1 pts
59Ingham County7.4+0.1 pts
60Calhoun County7.3+0.6 pts
60Muskegon County7.3+0.4 pts
60Ottawa County7.3+1.1 pts
63Alpena County7.20 pts
63Genesee County7.2-1 pts
63Kalamazoo County7.2+0.6 pts
66Shiawassee County7.1+0.5 pts
67Delta County7-0.7 pts
67Lenawee County7-0.2 pts
67Marquette County7+0.4 pts
67Saginaw County7-0.4 pts
67St. Clair County7-0.1 pts
72Barry County6.9+0.7 pts
72Gratiot County6.9+0.2 pts
72Keweenaw County6.9-1.1 pts
75Dickinson County6.6-0.5 pts
76Oakland County6.5+0.7 pts
77Allegan County6.4-0.1 pts
77Midland County6.4+0.5 pts
77Washtenaw County6.4+1.1 pts
80Clinton County6+0.6 pts
81Eaton County5.9-0.7 pts
82Livingston County5.5+0.7 pts
82Monroe County5.5-0.4 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 Michigan 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 Michigan 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/michigan-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 Michigan 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/michigan-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 Michigan 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/michigan-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_michigan_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 Michigan 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/michigan-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 Michigan 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/michigan-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/michigan-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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Questions

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

Mackinac County, with 14.1% in 2018, according to the U.S. Census Bureau.

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

Monroe County, with 5.5% 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 Michigan: more rankings