Festival dijadwalkan dari 03 Agu hingga 05 Agu 2012 (2 hari).
Lollapalooza Chicago berlangsung di Chicago, United States. Berikut adalah alamat lengkap festival: 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.
Genre dan sub-genre yang paling populer dari edisi sebelumnya adalah:
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