Timewell (Mound Station) is a village in Brown County, Illinois, United States. The population was 122 at the 2010 census.
According to the 2010 census, Mound Station has a total area of 0.52 square miles (1.35 km2), all land.
Mound Station is located at the intersection of U.S. Route 24 and County Route 2.
Mound Station was established as a post office in 1860; the Village of Mound Station incorporated December 23, 1901. In 1903, the post office name changed to Timewell, to avoid confusion with the town of Mounds, Illinois. 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.
As of the census of 2000, there were 127 people, 50 households, and 36 families residing in the village. The population density was 245.3 people per square mile (94.3/km2). There were 64 housing units at an average density of 123.6 per square mile (47.5/km2). The racial makeup of the village was 99.21% White, and 0.79% from two or more races.