Viola is a city in Sedgwick County, Kansas, United States. As of the 2010 census, the city population was 130.
Viola is located at 37°29′1″N 97°38′42″W / 37.48361°N 97.645°W / 37.48361; -97.645 (37.483526, -97.644918). According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.4 km²), all of it land.
As of the census of 2000, there were 211 people, 74 households, and 56 families residing in the city. The population density was 1,331.7 people per square mile (509.2/km²). There were 79 housing units at an average density of 498.6 per square mile (190.6/km²). The racial makeup of the city was 96.21% White, 2.37% Native American, 0.47% from other races, and 0.95% from two or more races. Hispanic or Latino of any race were 1.42% of the population.