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579 ft.
The elevation of Lubbock, Texas, is 3,256 feet (992.4 metres) above sea level.
On average 280 FT above sea level.
Elevation
Altitude
Pekin, Illinois is 518 feet (158 meters) above sea level
28.3 inches above sea level
579 ft.
667 ft above sea level
La Grange Illinois is 656 feet above sea level
Rockton, Illinois is 738 feet (225 meters) 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.
607 feet above sea level average Source: http://www.idcide.com/citydata/il/skokie.htm
The highest point of elevation in Illinois is Charl's Mound at 1,235ft
Elevation at sea level is elevation zero feet or meters above sea level.
The height above or below sea level is "elevation". Altitude is used only for distance 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.