Virginia is a city in Cass County, Illinois, United States. The population was 1,611 at the 2010 census. It is the county seat of Cass County.
Virginia is located at 39°56′56″N 90°12′42″W / 39.94889°N 90.21167°W / 39.94889; -90.21167 (39.949022, -90.211793).
According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.8 km²), of which, 1.1 square miles (2.8 km²) of it is land and 0.91% is water.