Tolono is a village in Champaign County, Illinois, United States. The population was 3,447 at the 2010 census. Its name was fabricated by J.B. Calhoun, land commission of the Illinois Central Railroad, who wrote about it simply: "[I] placed the vowel o three times, thus o-o-o, and filling in with the consonants t-l-n." (Stewart, pg. 362)
Tolono is located at 39°59′10″N 88°15′35″W / 39.98611°N 88.25972°W / 39.98611; -88.25972 (39.986046, -88.259727).
According to the United States Census Bureau, the village has a total area of 1.9 square miles (4.8 km²), all of it land.