Lillie is a village in Union Parish, Louisiana, United States. The population was 118 at the 2010 census, a decrease from 139 in 2000. It is part of the Monroe Metropolitan Statistical Area.
According to a 2007 report, Lillie was named one of the 10 worst speed traps in the state of Louisiana. Lillie made 85.59% of its revenue, an average of roughly $508 per capita population, from fines and forfeitures in the 2005 fiscal year.