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

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

Lancaster County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 67 counties in 2018, at 11.5%. Montgomery County had the lowest, at 5.2%. The median was 7.6% and the figure for Pennsylvania was 7.5%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest11.5Lancaster County
Lowest5.2Montgomery County
Median7.667 counties
Pennsylvania7.5History

Map of counties, 2018

Adams County: 7.9 %Allegheny County: 5.7 %Armstrong County: 7.2 %Beaver County: 5.8 %Bedford County: 8.4 %Berks County: 8.6 %Blair County: 7.2 %Bradford County: 7.6 %Bucks County: 6 %Butler County: 5.3 %Cambria County: 6.2 %Cameron County: 6.6 %Carbon County: 6.8 %Centre County: 7.1 %Chester County: 6.5 %Clarion County: 8.5 %Clearfield County: 7.1 %Clinton County: 8.2 %Columbia County: 7 %Crawford County: 8.7 %Cumberland County: 6.5 %Dauphin County: 7.6 %Delaware County: 7.2 %Elk County: 5.6 %Erie County: 6.9 %Fayette County: 7 %Forest County: 7.6 %Franklin County: 9.9 %Fulton County: 7.6 %Greene County: 7.2 %Huntingdon County: 7.6 %Indiana County: 8.6 %Jefferson County: 7.7 %Juniata County: 9.7 %Lackawanna County: 7.7 %Lancaster County: 11.5 %Lawrence County: 6.8 %Lebanon County: 9.5 %Lehigh County: 9 %Luzerne County: 7.3 %Lycoming County: 7.6 %McKean County: 7.2 %Mercer County: 7.8 %Mifflin County: 9.8 %Monroe County: 8.5 %Montgomery County: 5.2 %Montour County: 5.4 %Northampton County: 6.8 %Northumberland County: 7.6 %Perry County: 8.8 %Philadelphia County: 10.4 %Pike County: 7.7 %Potter County: 7.9 %Schuylkill County: 7.2 %Snyder County: 9.7 %Somerset County: 8.8 %Sullivan County: 8.9 %Susquehanna County: 8.5 %Tioga County: 7.8 %Union County: 8 %Venango County: 7.7 %Warren County: 6.7 %Washington County: 5.3 %Wayne County: 8.1 %Westmoreland County: 5.5 %Wyoming County: 6.6 %York County: 7.3 %
  • Under 6.5
  • 6.5 to 7.1
  • 7.1 to 7.6
  • 7.6 to 7.9
  • 7.9 to 8.7
  • 8.7 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

Lancaster County: 11.5 %Lancaster County11.5Philadelphia County: 10.4 %Philadelphia County10.4Franklin County: 9.9 %Franklin County9.9Mifflin County: 9.8 %Mifflin County9.8Juniata County: 9.7 %Juniata County9.7Snyder County: 9.7 %Snyder County9.7Lebanon County: 9.5 %Lebanon County9.5Lehigh County: 9 %Lehigh County9Sullivan County: 8.9 %Sullivan County8.9Perry County: 8.8 %Perry County8.8Somerset County: 8.8 %Somerset County8.8Crawford County: 8.7 %Crawford County8.7Berks County: 8.6 %Berks County8.6Indiana County: 8.6 %Indiana County8.6Clarion County: 8.5 %Clarion County8.5Monroe County: 8.5 %Monroe County8.5Susquehanna County: 8.5 %Susquehanna County8.5Bedford County: 8.4 %Bedford County8.4Clinton County: 8.2 %Clinton County8.2Wayne County: 8.1 %Wayne County8.1Union County: 8 %Union County8Adams County: 7.9 %Adams County7.9Potter County: 7.9 %Potter County7.9Mercer County: 7.8 %Mercer County7.8Tioga County: 7.8 %Tioga County7.8Jefferson County: 7.7 %Jefferson County7.7Lackawanna County: 7.7 %Lackawanna County7.7Pike County: 7.7 %Pike County7.7Venango County: 7.7 %Venango County7.7Bradford County: 7.6 %Bradford County7.6Dauphin County: 7.6 %Dauphin County7.6Forest County: 7.6 %Forest County7.6Fulton County: 7.6 %Fulton County7.6Huntingdon County: 7.6 %Huntingdon County7.6Lycoming County: 7.6 %Lycoming County7.6Northumberland County: 7.6 %Northumberland County7.6Luzerne County: 7.3 %Luzerne County7.3York County: 7.3 %York County7.3Armstrong County: 7.2 %Armstrong County7.2Blair County: 7.2 %Blair County7.2Lancaster County: 11.5 %Lancaster County11.5Philadelphia County: 10.4 %Philadelphia County10.4Franklin County: 9.9 %Franklin County9.9Mifflin County: 9.8 %Mifflin County9.8Juniata County: 9.7 %Juniata County9.7Snyder County: 9.7 %Snyder County9.7Lebanon County: 9.5 %Lebanon County9.5Lehigh County: 9 %Lehigh County9Sullivan County: 8.9 %Sullivan County8.9Perry County: 8.8 %Perry County8.8Somerset County: 8.8 %Somerset County8.8Crawford County: 8.7 %Crawford County8.7Berks County: 8.6 %Berks County8.6Indiana County: 8.6 %Indiana County8.6Clarion County: 8.5 %Clarion County8.5Monroe County: 8.5 %Monroe County8.5Susquehanna County: 8.5 %Susquehanna County8.5Bedford County: 8.4 %Bedford County8.4Clinton County: 8.2 %Clinton County8.2Wayne County: 8.1 %Wayne County8.1Union County: 8 %Union County8Adams County: 7.9 %Adams County7.9Potter County: 7.9 %Potter County7.9Mercer County: 7.8 %Mercer County7.8Tioga County: 7.8 %Tioga County7.8Jefferson County: 7.7 %Jefferson County7.7Lackawanna County: 7.7 %Lackawanna County7.7Pike County: 7.7 %Pike County7.7Venango County: 7.7 %Venango County7.7Bradford County: 7.6 %Bradford County7.6Dauphin County: 7.6 %Dauphin County7.6Forest County: 7.6 %Forest County7.6Fulton County: 7.6 %Fulton County7.6Huntingdon County: 7.6 %Huntingdon County7.6Lycoming County: 7.6 %Lycoming County7.6Northumberland County: 7.6 %Northumberland County7.6Luzerne County: 7.3 %Luzerne County7.3York County: 7.3 %York County7.3Armstrong County: 7.2 %Armstrong County7.2Blair County: 7.2 %Blair County7.2
%. 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
1Lancaster County11.5+0.3 pts
2Philadelphia County10.4+0.7 pts
3Franklin County9.9+1.3 pts
4Mifflin County9.8-0.3 pts
5Juniata County9.7-0.2 pts
5Snyder County9.70 pts
7Lebanon County9.5-0.1 pts
8Lehigh County9+0.3 pts
9Sullivan County8.9-0.2 pts
10Perry County8.8+0.8 pts
10Somerset County8.8+1.1 pts
12Crawford County8.70 pts
13Berks County8.6+0.2 pts
13Indiana County8.6+0.9 pts
15Clarion County8.5-0.1 pts
15Monroe County8.5+0.1 pts
15Susquehanna County8.5-0.4 pts
18Bedford County8.4+0.9 pts
19Clinton County8.20 pts
20Wayne County8.1-0.3 pts
21Union County8-0.2 pts
22Adams County7.9-0.6 pts
22Potter County7.9+0.2 pts
24Mercer County7.8+0.7 pts
24Tioga County7.8-0.9 pts
26Jefferson County7.7-0.7 pts
26Lackawanna County7.7+0.5 pts
26Pike County7.7-0.2 pts
26Venango County7.7+0.4 pts
30Bradford County7.6-1.2 pts
30Dauphin County7.6+0.1 pts
30Forest County7.6+0.3 pts
30Fulton County7.6-0.5 pts
30Huntingdon County7.6+0.9 pts
30Lycoming County7.6+0.1 pts
30Northumberland County7.60 pts
37Luzerne County7.3-0.2 pts
37York County7.3-0.2 pts
39Armstrong County7.2+0.7 pts
39Blair County7.2+0.6 pts
39Delaware County7.2+0.7 pts
39Greene County7.2+0.7 pts
39McKean County7.20 pts
39Schuylkill County7.2+0.1 pts
45Centre County7.10 pts
45Clearfield County7.1-1.1 pts
47Columbia County7+0.5 pts
47Fayette County7-0.2 pts
49Erie County6.9-0.6 pts
50Carbon County6.8+0.1 pts
50Lawrence County6.80 pts
50Northampton County6.8-0.1 pts
53Warren County6.7+0.1 pts
54Cameron County6.6-0.4 pts
54Wyoming County6.6-0.5 pts
56Chester County6.5-0.5 pts
56Cumberland County6.5-0.8 pts
58Cambria County6.20 pts
59Bucks County60 pts
60Beaver County5.8+0.1 pts
61Allegheny County5.7+0.2 pts
62Elk County5.6-0.3 pts
63Westmoreland County5.5-0.2 pts
64Montour County5.4-0.5 pts
65Butler County5.3+0.1 pts
65Washington County5.30 pts
67Montgomery County5.2-0.2 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 Pennsylvania 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 Pennsylvania 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/pennsylvania-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 Pennsylvania 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/pennsylvania-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 Pennsylvania 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/pennsylvania-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_pennsylvania_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 Pennsylvania 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/pennsylvania-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 Pennsylvania 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/pennsylvania-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/pennsylvania-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)?

Lancaster County, with 11.5% in 2018, according to the U.S. Census Bureau.

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

Montgomery County, with 5.2% 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 Pennsylvania: more rankings