Counties in Illinois by uninsured rate, under 65 (US model-based estimate)
Cook County had the highest uninsured rate, under 65 (US model-based estimate) of 102 counties in 2015, at 10.6%. Monroe County had the lowest, at 3.9%. The median was 6% and the figure for Illinois was 8.2%. Source: the U.S. Census Bureau.
Map of counties, 2015
- Under 5.3
- 5.3 to 5.8
- 5.8 to 6
- 6 to 6.4
- 6.4 to 7.1
- 7.1 and over
Top 40 counties, 2015
Full ranking
Other periods
About this ranking
People under 65 without health insurance coverage of any kind, as a percentage of all people under 65. 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. People 65 and over are left out because nearly all of them have Medicare.
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, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties (Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2015) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip
MLA 9
Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2015. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2015. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2015. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2015.
Harvard
U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2015 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2015 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_illinois_by_2015,
author = {{U.S. Census Bureau}},
title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2015}},
year = {2026},
howpublished = {Data set},
url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2015. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2015
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-2015-csv.zip
L2 - https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2015
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2015.
N1 - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Illinois by uninsured rate, under 65 (US model-based estimate) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_under_65","level":"province","within":"Illinois","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_under_65&level=province&within=Illinois&limit=10Questions
Which county has the highest uninsured rate, under 65 (US model-based estimate)?
Cook County, with 10.6% in 2015, according to the U.S. Census Bureau.
Which county has the lowest uninsured rate, under 65 (US model-based estimate)?
Monroe County, with 3.9% in 2015.
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, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.
Uninsured rate, under 65 (US model-based estimate): other rankings
Counties in Illinois: more rankings
- High blood pressure in adults, local model estimate
- Adult cigarette smoking rate, local model estimate
- Traffic fatality rate
- High cholesterol in screened adults, local model estimate
- Per capita income (US five-year survey estimate)
- Hispanic or Latino population share
- Asian population share
- Child poverty rate, under 18 (US official measure)