Patient Advocacy Without the Call Center
The data layer behind our New Jersey guide and all 50 city pages, in one place: CMS enrollment, Census demographics, and federal shortage designations, county by county.
Coverage data 2025-2026. Plan networks change - we confirm exactly what your plan covers before any work begins.
Counties covered by our city pages (21 counties, 1,808,834 beneficiaries). Each county links to its anchor city page.
| County | Medicare beneficiaries | Medicare Advantage share | Dual-eligible | Residents 65+ | Shortage designations |
|---|---|---|---|---|---|
| Bergen County | 191,121 | 36% | 22,214 | 170,348 | 0 |
| Ocean County | 167,713 | 38.2% | 12,548 | 144,719 | 3 |
| Middlesex County | 154,753 | 40.6% | 21,415 | 135,888 | 3 |
| Monmouth County | 145,454 | 31% | 12,151 | 119,488 | 2 |
| Essex County | 127,816 | 49% | 26,400 | 119,383 | 8 |
| Camden County | 105,208 | 44.9% | 17,593 | 84,971 | 3 |
| Morris County | 104,574 | 32.7% | 8,499 | 90,759 | 1 |
| Burlington County | 101,540 | 41.9% | 9,090 | 83,125 | 4 |
| Union County | 95,787 | 46.2% | 14,680 | 84,844 | 2 |
| Passaic County | 91,912 | 48% | 19,517 | 80,387 | 1 |
| Hudson County | 87,744 | 53.8% | 25,155 | 88,417 | 3 |
| Mercer County | 71,839 | 45.4% | 11,087 | 60,012 | 2 |
| Atlantic County | 65,779 | 42.9% | 8,611 | 52,889 | 1 |
| Somerset County | 65,062 | 35.2% | 6,308 | 57,335 | 1 |
| Gloucester County | 63,960 | 42.7% | 6,261 | 50,111 | 0 |
| Sussex County | 33,972 | 34.3% | 2,437 | 26,774 | 0 |
| Hunterdon County | 31,566 | 35% | 1,922 | 26,073 | 2 |
| Cape May County | 31,106 | 33.5% | 2,591 | 27,232 | 1 |
| Cumberland County | 30,587 | 52.4% | 6,107 | 23,806 | 6 |
| Warren County | 26,295 | 37.6% | 2,629 | 20,961 | 1 |
| Salem County | 15,046 | 41.6% | 2,174 | 12,294 | 1 |
Statewide, 40.9% 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 timing, which in New Jersey follows the federal rules for people 65 and older with no birthday rule and no annual reset: the one guaranteed six-month window opens at 65, and New Jersey adds a protection many states lack for younger beneficiaries, requiring at least one carrier to offer a Medigap plan on a guaranteed-issue basis to people under 65 who qualify through disability or ESRD at the same premium a 65-year-old pays, so getting the timing right the first time is what counts. About 9.5% of New Jersey seniors live below the poverty line, the group most likely to qualify for unclaimed help: the state PAAD and Senior Gold drug programs, federal Extra Help, and the Medicare Savings Programs, which the Division of Aging Services runs with an income and asset test. For the full rundown, sources included, see our New Jersey patient advocacy hub.
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Read moreSources: CMS Medicare Monthly Enrollment (2025); US Census Bureau ACS 2023 5-year; CMS Care Compare Timely & Effective Care (median ER minutes, period ending 09/30/2025); HRSA Health Professional Shortage Area designation file. Data retrieved 2026-08-14. Understood Care is an independent private advocacy service, not a government agency.