Aldermen: Jo Ellen Carruth (R) Charles "Danny" Carruth (R) Greensburg is a town in, and the parish seat of, St. Helena Parish, Louisiana, United States.

It is part of the Baton Rouge metropolitan statistical area.

[3] It has two 19th-century properties listed on the National Register of Historic Places, the old land office and the old parish jail.

The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[4] As of the 2020 United States census, there were 629 people, 232 households, and 159 families residing in the town.