Viola (pronounced vy-OLA) is a village in Mercer County, Illinois, United States. The population was 869 at the 2020 census, a decline of 9 percent from 955 in 2010. Geography According to the 2010 census, Viola has a total area of , of which (or 98.25%) is land and (or 1.75%) is water. Demographics As of the census of 2000, there were 956 people, 383 households, and 274 families residing in the village. The population density was . There were 401 housing units at an average density of . The racial makeup of the village was 98.22% White, 0.84% from other races, and 0.94% from two or more races. Hispanic or Latino of any race were 1.78% of the population. There were 383 households, out of which 32.6% had children under the age of 18 living with them, 60.1% were married couples living together, 8.9% had a female householder with no husband present, and 28.2% were non-families. 26.1% of all households were made up of individuals, and 13.1% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.03. In the village, the population was spread out, with 25.5% under the age of 18, 6.7% from 18 to 24, 29.3% from 25 to 44, 23.5% from 45 to 64, and 15.0% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 90.8 males. For every 100 females age 18 and over, there were 87.4 males. The median income for a household in the village was $41,161, and the median income for a family was $47,159. Males had a median income of $36,458 versus $20,556 for females. The per capita income for the village was $18,127. About 7.4% of families and 8.5% of the population were below the poverty line, including 10.4% of those under age 18 and 10.1% of those age 65 or over. References Villages in Mercer County, Illinois Villages in Illinois