Killona is a census-designated place (CDP) in St. Charles Parish, Louisiana, United States. The population was 724 in 2020. On December 14, 2022, the town was hit by a destructive and deadly EF2 tornado that damaged or destroyed numerous structures, killed one person, and injured eight others.
Killona is located at (29.999471, -90.487081).
According to the United States Census Bureau, the CDP has a total area of , of which is land and (9.13%) is water.
Killona was first listed as a census designated place in the 2000 U.S. census.
In 2000, Killona's population was 797. By the 2020 census, its population declined to 724.
St. Charles Parish Public School System operates public schools:
Killona is home to the following: