Age: 20
Label: Rostrum Records
From: Pittsburgh, Pennsylvania
Active Since: 2007
Twitter: @MacMiller
Best Known Song: "Donald Trump" (2011)

Mac Miller already built a strong following via his thorough mixtapes, but there is one achievement that sets him apart from all the other rappers on the list. His full-length debut, Blue Slide Park, was the first independently-distributed record to top the Billboard albums chart since Tha Dogg Pound's Dogg Food in 1995.

But the young Pittsburgh sensation didn't ease up after this historic success-he's since released his seventh mixtape, Macadelic, finished up The Macadelic Tour, and is currently prepping his collaboration with Pharrell entitled Pink Slime. If "Onaroll" was any indicator, this one should be a treat.

His sophomore album, Watching Movies With The Sound Off, hits next year.

RELATED: The 15 Most Underrated Rappers Right Now
RELATED: Mac Miller's 10 Coolest Instagram Pictures