Mound Station (Timewell) is a village in Brown County, Illinois, United States.

According to the 2021 census gazetteer files, Mound Station has a total area of 0.52 square miles (1.35 km2), all land.

In 1903, the post office name changed to Timewell, to avoid confusion with the town of Mounds, Illinois.

[4] The Timewell name has supplanted the original name of Mound Station in local use, but the legal village name has never changed.

Thus legal references in U.S. Census Bureau products as well as lists from the Illinois Secretary of State's Office continue to show Mound Station, while the local Post Office continues as Timewell.