DeValls Bluff is a city in and the county seat of the southern district of Prairie County, Arkansas, United States. The population was 619 at the 2010 census.
GeographyDeValls Bluff is located at 34°47′5″N 91°27′37″W (34.784760, -91.460346). The city is located within the Grand Prairie section of Prairie County, a subdivision of the Mississippi embayment within the Mississippi Alluvial Plain. Historically, the Grand Prairie was a flat grassland between the Arkansas River and the White River. However, the area was subject to clear cutting for row agriculture by early settlers. Today, the area is defined by rice cultivation, aquaculture and duck hunting. According to the United States Census Bureau, the town has a total area of 2.8 km² (1.1 mi²), of which 2.7 km² (1.0 mi²) is land and 0.2 km² (0.1 mi²) (6.42%) is water.
As of the census of 2000, there were 783 people, 334 households, and 218 families residing in the town. The population density was 293.5/km² (762.8/mi²). There were 389 housing units at an average density of 145.8/km² (379.0/mi²). The racial makeup of the town was 67.82% White, 31.80% Black or African American, 0.13% Asian, and 0.26% from two or more races. 0.13% of the population were Hispanic or Latino of any race.There were 334 households out of which 33.2% had children under the age of 18 living with them, 43.7% were married couples living together, 17.4% had a female householder with no husband present, and 34.7% were non-families. 31.7% of all households were made up of individuals and 17.1% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.96.
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