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Pennsylvania Medicare, by the Numbers

The data layer behind our Pennsylvania guide and all 59 city pages, in one place: CMS enrollment, Census demographics, and federal shortage designations, county by county.

3,000,537Medicare beneficiaries statewide (2025)
54.2%chose Medicare Advantage plans
478,063dual-eligible for Medicare and Medicaid
702,544Pennsylvanians 65+ live alone
188 minmedian ER visit statewide (CMS)
130federal primary-care shortage designations

Medicare Enrollment by County

Counties covered by our city pages (31 counties, 2,511,792 beneficiaries). Each county links to its anchor city page.

County Medicare beneficiaries Medicare Advantage share Dual-eligible Residents 65+ Shortage designations
Allegheny County 281,667 68.3% 41,263 244,881 7
Philadelphia County 265,467 59.7% 102,140 227,129 14
Montgomery County 188,594 37% 18,006 158,301 1
Bucks County 156,713 41.3% 14,718 128,921 0
Lancaster County 124,999 51.6% 13,913 106,580 1
Delaware County 121,050 40.5% 18,665 98,090 3
Chester County 112,260 33.1% 8,293 93,642 2
York County 105,631 52.2% 12,291 84,652 1
Westmoreland County 101,558 71.2% 12,368 83,913 1
Berks County 93,440 46.3% 14,729 76,181 2
Lehigh County 80,871 47.4% 14,290 65,126 2
Northampton County 78,776 44% 10,152 62,869 0
Luzerne County 77,380 44.8% 13,923 65,007 4
Erie County 65,605 64.3% 12,395 51,792 6
Dauphin County 62,479 60.8% 10,718 50,889 1
Cumberland County 61,510 52.8% 6,439 49,724 2
Washington County 55,711 68.7% 7,061 45,137 1
Lackawanna County 55,150 44.7% 11,966 43,716 2
Butler County 50,487 69% 5,029 39,327 1
Monroe County 39,116 44.6% 5,354 31,730 0
Cambria County 38,340 76% 6,770 31,109 4
Franklin County 38,311 44.1% 4,421 31,287 2
Schuylkill County 37,251 46.5% 6,286 29,838 3
Lebanon County 35,351 53.6% 4,454 28,915 0
Blair County 32,993 64.6% 5,731 25,764 1
Mercer County 30,350 68.3% 4,940 24,927 2
Lycoming County 29,451 56.6% 5,024 22,954 2
Centre County 27,872 61.1% 2,495 24,549 4
Lawrence County 24,196 71.3% 4,320 19,608 0
Crawford County 22,803 56.4% 3,859 18,403 7
Columbia County 16,410 50.7% 2,501 13,158 0

Statewide, 54.2% of beneficiaries chose Medicare Advantage in 2025. Counties above that line see more prior authorizations and more denials worth appealing; counties below it lean on Medigap rights, which in Pennsylvania follow the federal rule at 65 (one guaranteed six-month window, no birthday rule, no year-round switching) but add a strong under-65 guaranteed-issue right for disability and ESRD at age-65 premiums, so timing still matters. About 9.4% of Pennsylvania seniors live below the poverty line, the group most likely to qualify for unclaimed help: Extra Help, the Medicare Savings Programs, and Pennsylvania's own PACE and PACENET drug programs. For the full rundown, sources included, see our Pennsylvania patient advocacy hub.

The Numbers Are the Backdrop. The Help Is the Point.

One dedicated advocate for the bills, appeals, appointments, and paperwork, serving every Pennsylvania county virtually, usually at $0 with Medicare.

Or start from your city: every Pennsylvania city we serve.

Sources: CMS Medicare Monthly Enrollment (2025); US Census Bureau ACS 2023 5-year; CMS Care Compare Timely & Effective Care (median ER minutes, period ending 06/30/2025); HRSA Health Professional Shortage Area designation file. Data retrieved 2026-08-07. Understood Care is an independent private advocacy service, not a government agency.