Cliffside Park packs more people into one square mile than almost anywhere else in New Jersey.

A small town carrying a lot of people — and a lot of Medicare-age residents

Cliffside Park sits at roughly one square mile with over 25,000 residents, making it one of the most densely populated towns in New Jersey. About one in five residents is 65 or older, which is a meaningfully larger share than the county average.

That density does not change the underlying rule: Cliffside Park is Bergen County, and your Medicare Advantage and Part D plan choices are set at the county level, same as every other town covered on this site.

A genuinely diverse community

Cliffside Park has a large foreign-born population and a majority of residents speak a language other than English at home. Medicare enrollment rules and deadlines apply exactly the same regardless of where you or your family are from — the part that varies is making sure the specific plan you are looking at actually covers the specific doctors and pharmacy you already use.

What to have written down before we talk

Your ZIP code, every doctor and facility you want to keep, and every prescription you take with its dose. In a town this compact, it is tempting to assume everyone nearby has the same plan or the same answer — they usually do not, because those three things are different for every household.