Natchitoches is located at 31°45′15″N 93°5′42″W / 31.75417°N 93.095°W / 31.75417; -93.095 (31.754123, -93.095085)^[2] and has an elevation of 118 feet (36.0 m)^[3].

According to the United States Census Bureau, the city has a total area of 25.1 square miles (65.1 km²), of which, 21.6 square miles (55.8 km²) of it is land and 3.6 square miles (9.2 km²) of it (14.21%) is water.

A 35-mile (56 km) long lake was formed from a portion of the Red River when it changed course, which is now known as Cane River Lake.

Natchitoches is located about: