Iuka is a city in Pratt County, Kansas, United States. As of the 2010 census, the city population was 163.
Iuka is located at 37°43′47″N 98°44′5″W / 37.72972°N 98.73472°W / 37.72972; -98.73472 (37.729696, -98.734758). According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km²), all of it land.
As of the census of 2000, there were 185 people, 78 households, and 60 families residing in the city. The population density was 305.7 people per square mile (117.1/km²). There were 87 housing units at an average density of 143.8 per square mile (55.1/km²). The racial makeup of the city was 98.38% White, 0.54% Native American, and 1.08% from two or more races.