Based on the 2007 Census conducted by the Central Statistical Agency of Ethiopia (CSA), this woreda has a total population of 20,970, of whom 10,991 are men and 9,979 women; with an area of 887.74 square kilometers, Wentawo has a population density of 23.62, which is less than the Zone average of 23.79 persons per square kilometer. While 2,851 or 13.60% are urban inhabitants, a further 59 individuals are pastoralists. A total of 3,996 households were counted in this woreda, which results in an average of 5.2 persons to a household, and 3,846 housing units. The majority of the inhabitants said they were Protestant, with 92.82% of the population reporting they observed this belief, while 3.22% practiced traditional religions, 1.89% were Catholic, and 1.58% of the population practised Ethiopian Orthodox Christianity.Census 2007 Tables: Gambela Region, Tables 2.1, 2.4, 2.5, 3.1, 3.2 and 3.4.
