Sterling, Illinois, has an approximate elevation of about 700 feet (213 meters) above sea level. This elevation can vary slightly depending on specific locations within the city. The area's elevation is typical for regions in northwestern Illinois, which are generally characterized by rolling terrain.
Pekin, Illinois is 518 feet (158 meters) above sea level
Carbondale, Illinois is 415 feet (126.5 meters) above sea level
The average elevation of Illinois is about 600 feet above sea level. The highest point in the state is Charles Mound, which reaches 1,235 feet above sea level.
Charles Mound, located in northwestern Illinois, has the state's highest elevation at 1,235 feet above sea level. The lowest point in Illinois is on the Mississippi River at 279 feet above sea level.
The average elevation above sea level in Chicago, Illinois is about 594 feet (181 meters).
Athens, Illinois is 602 feet (183 meters) above sea level
Salem Illinois is 530 feet above sea level.
Rockton, Illinois is 738 feet (225 meters) above sea level
La Grange Illinois is 656 feet above sea level
Aurora, Illinois is 722 feet (220 meters) above sea level
28.3 inches above sea level
Sea level (average sea level) is the start point for measuring elevation on this planet and is considered to be the same everywhere. Chicago, however, is not at sea level; rather its mean elevation is 586 feet (179 meters) above sea level.