What Borders Louisiana? States, Country, and Water Bodies

Land Borders

• West: Texas (Sabine River forms part of boundary)
• North: Arkansas
• East: Mississippi (Mississippi River forms boundary)

International Border

• Southwest: Mexico (maritime boundary in Gulf of Mexico)

Water Borders

• South: Gulf of Mexico
• West: Sabine River (Texas line)
• North: Red River (Arkansas line, partly)
• East: Mississippi River (Mississippi line)
• Internal: Atchafalaya River, Lake Pontchartrain, Toledo Bend Reservoir, countless bayous

Strategic Geography

Louisiana's position at the mouth of the Mississippi—draining 41% of the contiguous U.S.—makes it a global trade gateway and ecological crossroads.