Santa Fe historically had numbered districts within a division for its main lines, and named districts for the branch lines. The Illinois Division main line had the 1st District and the 2nd District, split at Chillicothe. In the late 1980's, Santa Fe adopted named subdivisions, and the 1st District and the 2nd District became one subdivision, the Chillicothe Subdivision.
Abandoned Lines
Pekin District (Ancona-Pekin)