1906 timetable for the ICRR showing a passenger stop at Dimmick
The town was named for its founder, Daniel Dimmick, who emigrated here from Mansfield, Connecticut by way of Hennepin, Illinois in 1833. The railroad was extended to Dimmick c. 1865 by the Illinois Central Railroad.
In 1873, a rail depot was constructed to replace an earlier one that had fallen into disrepair and the town was platted. By 1876, the town was home to three stores and a blacksmith. A post office was established at Dimmick in 1877, and remained in operation until 1912. Passenger service continued until the early 1930s before being discontinued.
^Baldwin, Elmer (1993). History of LaSalle County, Illinois: Its Topography, Geology, Botany, Natural History, History of the Mound Builders, Indian Tribes, French Explorations, and a Sketch of the Pioneer Settlers of Each Town to 1840, with an Appendix, Giving the Present Status of the County, Its Population.
^The Past and present of La Salle County, Illinois: containing a history of the county, its cities, towns, &c., a biographical directory of its citizens, war record of its volunteers in the late rebellion, portraits of early settlers and prominent men, general and local statistics, map of La Salle County, history of Illinois, Constitution of the United States, miscellaneous matters, etc, etc. Chicago: H.F. Kett & Co. 1877. p. 359.
^"La Salle County". Jim Forte Postal History. Retrieved November 4, 2015.
