The New Lenox Township represents Frankfort, Homer Glen, Joliet, Mokena and New Lenox, and its administrative office is located off South Cedar Road in New Lenox.
The township also has separate offices for the assessor and road district. Bill McCollum is the township supervisor, Bonnie Hernandez is the assessor and Dennis McPartlin is the highway commissioner.
The township Board of Trustees meets at 7pm on the second Thursday of each month in the township office.