1830Civil Rights
Stephen was born on March 30, 1830, in Scotland.
1839Government
In 1839, when Arthur was nine years old, the Stephen family came to America and settled in Knox County, Illinois.
1858History
Oakdale Township was organized in 1858.
2000History
=== 2000 census ===
As of the census of 2000, there were 26,653 people, 10,243 households, and 7,129 families living in the city.
2010History
=== 2010 census ===
As of the census of 2010, there were 27,378 people, 10,948 households, and 7,152 families living in the city.
2020History
== Demographics ==
=== 2020 census ===
As of the census of 2020, there were 28,300 people and 11,357 households living in the city.