Ullin is a village in Pulaski County, Illinois, United States. The population was 463 at the 2010 census.
Ullin, with the ICR Depot on the left
Pulaski County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 5,193. Its county seat is Mound City. Its largest city is Mounds. It is located along the Ohio River in the southwestern portion of the state, known locally as "Little Egypt".
Pulaski County Courthouse in Mound City