"The Plains" originally referred to the local region where the Mound Builders lived and built their signature Indian mounds.[4] A post office called The Plains has been in operation since 1908.[5]
Geography
According to the United States Census Bureau, the CDP has a total area of 2.3 square miles (5.9 km2), of which 0.0077 square miles (0.02 km2), or 0.28%, is water.[6]
At the 2000 census there were 2,931 people, 1,224 households, and 714 families in the CDP. The population density was 1,275.8 inhabitants per square mile (492.6/km2). There were 1,344 housing units at an average density of 585.0 per square mile (225.9/km2). The racial makeup of the CDP was 94.13% White, 2.42% African American, 0.31% Native American, 1.09% Asian, 0.27% from other races, and 1.77% from two or more races. Hispanic or Latino of any race were 0.82%.[3]
Of the 1,224 households 29.0% had children under the age of 18 living with them, 41.0% were married couples living together, 14.0% had a female householder with no husband present, and 41.6% were non-families. 33.9% of households were one person and 11.6% were one person aged 65 or older. The average household size was 2.24 and the average family size was 2.88.
The age distribution was 23.5% under the age of 18, 10.4% from 18 to 24, 28.1% from 25 to 44, 19.4% from 45 to 64, and 18.5% 65 or older. The median age was 36 years. For every 100 females, there were 80.0 males. For every 100 females age 18 and over, there were 72.5 males.
The median household income was $30,102 and the median family income was $44,761. Males had a median income of $26,687 versus $25,106 for females. The per capita income for the CDP was $17,164. About 13.3% of families and 17.7% of the population were below the poverty line, including 18.9% of those under age 18 and 14.8% of those age 65 or over.
