[3] A French trading post may have operated at the current site of Delaplaine prior to the Louisiana Purchase in 1803.

Arkansas Highway 34 leads southeast from the center of town 16 miles (26 km) to Oak Grove Heights.

Arkansas Highway 304 leads west from Delaplaine on a more direct route of 16 miles (26 km) to Pocahontas.

According to the United States Census Bureau, the town of Delaplaine has a total area of 1.1 square miles (2.9 km2), all land.

At the time of the 2000 United States Census,[8] there were 127 people, 49 households, and 36 families living in the town.

[11] In 2003, the Arkansas Legislature, supported by then-Governor Mike Huckabee, passed Act 60, an act that required every school district in the state that had a daily enrollment of less than 350 students to be consolidated with another school district.

Delaplaine mayor Larry Myrick stated that the community lost children with families after the school stopped operations.