Yalobusha County is a county located in the U.S. state of Mississippi. As of the 2010 census, the population was 12,678. Its county seats are Water Valley and Coffeeville.
As of the census of 2000, there were 13,051 people, 5,260 households, and 3,597 families residing in the county. The population density was 28 people per square mile (11/km²). There were 6,224 housing units at an average density of 13 per square mile (5/km²). The racial makeup of the county was 60.46% White, 38.66% Black or African American, 0.21% Native American, 0.08% Asian, 0.08% Pacific Islander, 0.09% from other races, and 0.41% from two or more races. 0.97% of the population were Hispanic or Latino of any race.
There were 5,260 households out of which 29.70% had children under the age of 18 living with them, 46.60% were married couples living together, 17.60% had a female householder with no husband present, and 31.60% were non-families. 28.70% of all households were made up of individuals and 14.00% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 3.02.
In the county, the population was spread out with 25.60% under the age of 18, 8.90% from 18 to 24, 26.10% from 25 to 44, 23.80% from 45 to 64, and 15.70% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 91.30 males. For every 100 females age 18 and over, there were 86.20 males.
The median income for a household in the county was $26,315, and the median income for a family was $31,801. Males had a median income of $27,009 versus $20,236 for females. The per capita income for the county was $14,953. About 19.50% of families and 21.80% of the population were below the poverty line, including 30.10% of those under age 18 and 21.20% of those age 65 or over.