99.7 per 100K
1,003:1 · 67 providers
Illinois 135.4 · US 119.6
Medicare-enrolled: 37% (CMS Doctors & Clinicians, August 2026)
HRSA AHRF benchmark: 52 (2023 data, AHRF 2024-2025)
Find primary care physicians in Williamson County →Ltrl Health Data
Williamson County, IL
Healthcare providers per resident, insurance coverage and preventive care, with state and US comparisons.
Population 67,225 (Census, 2025)Provider data: NPPES, September 2026FIPS 17199
Healthcare providers
Dentists
58.0 per 100K
1,724:1 · 39 providers
Illinois 90.3 · US 80.5
Medicare-enrolled: 0% (CMS Doctors & Clinicians, August 2026)
HRSA AHRF benchmark: 40 (2024 data, AHRF 2024-2025)
Find dentists in Williamson County →Mental health providers
587.6 per 100K
170:1 · 395 providers
Illinois 402.5 · US 396.3
Medicare-enrolled: 14% (CMS Doctors & Clinicians, August 2026)
Find mental health providers in Williamson County →Other primary care providers
249.9 per 100K
400:1 · 168 providers
Illinois 154.1 · US 169.7
Medicare-enrolled: 65% (CMS Doctors & Clinicians, August 2026)
Find other primary care providers in Williamson County →Primary care physicians
| Measure | Providers | Per 100,000 | Residents per provider | Illinois | US | Trend |
|---|---|---|---|---|---|---|
| Dentists Medicare-enrolled: 0% (CMS Doctors & Clinicians, August 2026) HRSA AHRF benchmark: 40 (2024 data, AHRF 2024-2025) Find dentists in Williamson County → | 39 | 58.0 | 1,724:1 | 90.3 | 80.5 | |
| Mental health providers Medicare-enrolled: 14% (CMS Doctors & Clinicians, August 2026) Find mental health providers in Williamson County → | 395 | 587.6 | 170:1 | 402.5 | 396.3 | |
| Other primary care providers Medicare-enrolled: 65% (CMS Doctors & Clinicians, August 2026) Find other primary care providers in Williamson County → | 168 | 249.9 | 400:1 | 154.1 | 169.7 | |
| Primary care physicians Medicare-enrolled: 37% (CMS Doctors & Clinicians, August 2026) HRSA AHRF benchmark: 52 (2023 data, AHRF 2024-2025) Find primary care physicians in Williamson County → | 67 | 99.7 | 1,003:1 | 135.4 | 119.6 |
Trend: June 2021 to September 2026. State and US figures are pooled (total providers ÷ total population) for the same period.
Coverage and preventive care
Flu vaccinations36.0%
Illinois 48.0% · US 44.0% · CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023
Illinois 37.0% · US 36.0% · CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023
Illinois 3,343 · US 2,769 · CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023
Illinois 8.1% · US — · U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024
Illinois 9.8% · US — · U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024
Illinois 3.5% · US — · U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024
| Measure | Williamson County | Illinois | US | Source |
|---|---|---|---|---|
| Flu vaccinations | 36.0% | 48.0% | 44.0% | CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023 |
| Mammography screening | 39.0% | 37.0% | 36.0% | CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023 |
| Preventable hospital stays | 3,649 | 3,343 | 2,769 | CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023 |
| Uninsured (under 65) | 6.0% | 8.1% | — | U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024 |
| Uninsured adults (18–64) | 7.1% | 9.8% | — | U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024 |
| Uninsured children (under 19) | 2.9% | 3.5% | — | U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024 |
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Ltrl Health Data. Williamson County, IL: healthcare providers and access. Data as of September 2026. https://ltrl.com/research/workforce/illinois/williamson-county
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Registered, not necessarily practicing. Provider counts come from the national provider registry (NPPES): active individual clinicians, counted once under their primary specialty at their practice-location county. Some registered clinicians are retired or see few patients. Counts under 10, or places with fewer than 10,000 residents, are flagged and left out of rankings. Nothing is estimated or imputed. Methodology
Sources: NPPES (CMS), September 2026; Census population estimates; Census SAHIE; CMS Mapping Medicare Disparities. Ltrl is not affiliated with County Health Rankings & Roadmaps.