Festivalen ble arrangert fra 03 Aug til 05 Aug 2012 (2 dag(er)).
Lollapalooza Chicago finner sted i Chicago, United States. Her er den fullstendige adressen til festivalen: GRANT PARK – CHICAGO, IL
The Weeknd, Red Hot Chili Peppers, LP, Tame Impala, The Black Keys, Calvin Harris, The War on Drugs, The Head and the Heart, Jack White, Sigur Rós, Franz Ferdinand, Frank Ocean, First Aid Kit, Of Monsters and Men, J. Cole.
De mest populære sjangrene og undersjangrene i den siste utgaven var:
rock
electronic
folk
indie rock
indie
alternative
indie pop
alternative rock
indie folk
electronica
rnb
synth-pop
folk rock
house
lo-fi
psychedelic rock
americana
dubstep
electro