St. Helena Parish is a parish in the U.S. state of Louisiana. At the 2020 United States census, the population was 10,920. Its seat is Greensburg. The parish was created in 1810. St. Helena Parish is part of the Baton Rouge metropolitan area.

Livingston Parish is a parish in the U.S. state of Louisiana. Its parish seat is the town of Livingston. Livingston Parish is one of the Florida Parishes, a region which, unlike the rest of the state, was part of the Spanish Empire rather than the French Empire.