Otterville is an incorporated town in Jersey County, Illinois, United States.

[4] According to the 2010 census, Otterville has a total area of 1.01 square miles (2.62 km2), all land.

[8] In 1834, Dr. Silas Hamilton, a local physician, left $4,000 for the construction and operation of a building for educational and religious purposes.

A stone-built school was opened in 1836, and the tuition-free education for local students attracted families to the area.

George Washington, a slave freed by Dr. Hamilton, studied here, became successful, and established a perpetual scholarship fund for Americans of African descent.