[2] Toulon is part of the Peoria, Illinois Metropolitan Statistical Area, and is the northwestern terminus of the Rock Island Trail State Park.

[3] According to the 2010 census, Toulon has a total area of 1.02 square miles (2.64 km2), all land.

As of the census[6] of 2000, there were 1,400 people, 555 households, and 355 families residing in the city.

There were 601 housing units at an average density of 676.3 per square mile (261.1/km2).

33.2% of all households were made up of individuals, and 20.2% had someone living alone who was 65 years of age or older.