The coil count varies by size:
TWIN:
Pocketed coils: 512
Support coils (base): 240
TOTAL: 752
TWIN XL:
Pocketed coils: 544
Support coils (base): 260
TOTAL: 804
FULL:
Pocketed coils: 704
Support coils (base): 336
TOTAL: 1,040
QUEEN:
Pocketed coils: 884
Support coils (base): 416
TOTAL: 1,300
KING:
Pocketed coils: 1,088
Support coils (base): 520
TOTAL: 1,608
CAL KING & SPLIT KING:
Pocketed coils: 1,088
Support coils (base): 520
TOTAL: 1,608