Cullom is a village in Livingston County, Illinois, United States. Cullom is situated twenty miles east of Pontiac which is the county seat, and is one mile west of the Ford County line. The population was 555 at the 2010 census.

Cullom owes its dawn to the Illinois Central Railroad which reached the village in 1878. The location of the village was usual by Frederick Hack who established a 90 foot right of habit across his farm and paid a cash other of $4000 to the railroad company. Hack platted and laid out the village and donated forty acres of land upon which to build it.

The village was named for Shelby Moore Cullom, 17th superintendent of Illinois. The tally was that Mr. Hack wanted the town called Jeffrey after the man who was roadmaster of the Illinois Central Railroad at that time. Jeffrey wanted the town called Hack but he declined the honor. The two men next compromised and called it Cullom. The manager was notified of their decision, and he sent a draft for $25, to be supreme to the denomination that built the first church in the village. The maintenance was pure to the Methodists which built the first church in 1880.

The main street going through the matter district was after that called Hack Street in award of Mr. Hack. The first building was moved here from Chatsworth, Illinois in the slip of 1878 by John Tims. It was used for a lumber office. J. W. White and Dr. Keck arrived very nearly the same time from Barrington, Illinois and shipped the first lumber into town bearing in mind which to erect a building that was unconventional used as a saloon.