Lee County is a county located in the U.S. state of Arkansas. As of 2000, the population is 12,580. The county seat is Marianna. Lee County is Arkansas's 72nd county, formed alongside Cleveland and Stone counties on April 17, 1873 and named for Confederate General Robert E. Lee.
As of the census of 2000, there were 12,580 people, 4,182 households, and 2,960 families residing in the county. The population density was 21 people per square mile (8/km²). There were 4,768 housing units at an average density of 8 per square mile (3/km²). The racial makeup of the county was 41.41% White, 57.24% Black or African American, 0.16% Native American, 0.27% Asian, 0.52% from other races, and 0.40% from two or more races. 2.19% of the population were Hispanic or Latino of any race.
There were 4,182 households out of which 31.20% had children under the age of 18 living with them, 43.20% were married couples living together, 23.10% had a female householder with no husband present, and 29.20% were non-families. 27.20% of all households were made up of individuals and 13.80% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.14.
In the county the population was spread out with 26.00% under the age of 18, 10.20% from 18 to 24, 28.70% from 25 to 44, 21.10% from 45 to 64, and 14.00% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 111.40 males. For every 100 females age 18 and over, there were 118.40 males.
The median income for a household in the county was $20,510, and the median income for a family was $25,846. Males had a median income of $26,900 versus $19,505 for females. The per capita income for the county was $10,983. About 24.70% of families and 29.90% of the population were below the poverty line, including 38.80% of those under age 18 and 27.60% of those age 65 or over.