Saint-Louis (originally Palmerston) is a geographic parish in Kent County, New Brunswick, Canada.

[7] The rural district areas are Kouchibouguac National Park in the east and the western end of the parish.

Prior to the 2023 governance reform, the parish was divided between the local service districts of Saint-Ignace and the parish of Saint-Louis, which included an area with amended services named Canisto Road.

In 1857 the northern boundary with Carleton in the eastern end of the parish was altered to run along grant lines.

[11] In 1909 the southern part of Saint-Louis was included in the new parish of Saint-Charles, using the rear line of grants along the Kouchibouguacis River to form much of the boundary.