Kaskaskia is located in south Illinois. Kaskaskia has 0.11 square miles of land area and has no water area. As of 2010-2014, the total Kaskaskia population is 9, which has shrunk 0.00% since 2000. The population growth rate is lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. On average, the public school district that covers Kaskaskia is worse than the state average in quality.