Riceboro is located at (31.735411, -81.440240).
According to the United States Census Bureau, the city has a total area of 11.4 square miles (29.5 km²), of which, 11.1 square miles (28.7 km²) of it is land and 0.3 square miles (0.8 km²) of it (2.72%) is water.
There were 256 households out of which 32.4% had children under the age of 18 living with them, 46.5% were married couples living together, 21.1% had a female householder with no husband present, and 25.4% were non-families. 23.8% of all households were made up of individuals and 12.1% had someone living alone who was 65 years of age or older. The average household size was 2.88 and the average family size was 3.42.
In the city the population was spread out with 29.9% under the age of 18, 8.3% from 18 to 24, 25.3% from 25 to 44, 22.0% from 45 to 64, and 14.5% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 98.9 males. For every 100 females age 18 and over, there were 91.1 males.
The median income for a household in the city was $31,406, and the median income for a family was $40,938. Males had a median income of $31,635 versus $17,250 for females. The per capita income for the city was $15,235. About 15.5% of families and 19.2% of the population were below the poverty line, including 20.6% of those under age 18 and 32.1% of those age 65 or over.