In the saga of twilight in age after carlisle and Esme Cullen is Emmett Cullen oldest then jasper hale next both 20 then Rosalie hale or Alice cullen16 17 18 or 19 then Edward Cullen 17 youngest?

Here's a list of all the ages, follwed by when they were born. frozen ages (Ages they became Vampires, Oldest to youngest):

Esme-26

Carlisle-20

Emmett- Also 20

Jasper- Also 20

Alice-19

Rosalie-18

Edward-17 Birth Years (Oldest to youngest):

Carlisle- Born 1643

Jasper- Born 1843

Esme-Born 1895

Edward- Born 1901

Alice- Also Born 1901

Rosalie- Born 1915

Emmett- Also Born 1915 Of course, Edward was changed 3 years before Esme, And 2 years before Alice, and Rosalie was changed 2 years before Emmett. Hope this Helps, if not, check out this link:

http://twilightsaga.wikia.com/wiki/Twilight_Saga_Wiki