The New York band debuted at the top spot of the Billboard 200, shifting 124,000 copies of the record in one week.
The album is the 12th independently distributed record to top the US charts, according to Nielsen SoundScan.
The quartet's self-titled first album sold 28,000 copies in its opening week, peaking at number 17 on the chart and selling a total of 498,000.
Ke$ha, who debuted at number one last week with Animal, drops two places to three, while Susan Boyle's I Dreamed A Dream holds steady in second place.
Elsewhere, R&B singer Omarion's third album Ollusion is the second highest new entry at 19, selling 19,000 copies.