Originally named St. John the Baptist for the Catholic church at its heart, Edgard was renamed in 1850 for its postmaster, Edgar Perret.

Edgard's first St. John the Baptist Catholic Church (1772) was destroyed by the Poché Crévasse in 1821.

Many families leased land from the Caires and Graugnards on Columbia Plantation, cultivating their own produce to sell.

In 1899, the Mississippi River presented excitement when in the late winter, ice could be seen floating downstream.

The ice flows jammed the river, interrupting ship traffic for several days.

In early Edgard, a favorite event of many townspeople was the arrival of the showboat, which would dock at Caire's Landing.

Edgard is located on the west bank of the Mississippi River and has an elevation of 13 feet (4.0 m).

As of the 2020 United States census, there were 1,948 people, 571 households, and 348 families residing in the CDP.