[Ultimatejoe]

There is a certain ambiguity in the dates provided, but the numbers I always go by is like this:

Before the Fall:
Line of Elros: 300-325 years or so
Other Numenoreans: 200-215

After the Fall:
Line of Elros: 250 to 300, but clinging on into senility
Other Numenoreans: 150-200

Elendil (The Tall), the last surviving lord of Andunie lived 322 years, recapturing the vigor of the unfallen Lords of Numenor; but after his death the lives of the Numenoreas wained until the average Dunedain in M.E. would probably barely make it to 100 and only the healthiest of Royal Houses would see 150 by the end of the Third Age.

Bare in mind that without cataclysmic events like the Fall and the Black Death the lifespan of the Numenoreans especially in M.E. shortened to a degree with every generation. Only Elessar recaptured the uncorrupted glory of the Numenoreans and he lived to an age of 210, far longer than any of his forebarers for many generations, but only to the span of a 'regular' person of Numenor uncorrupted.