East St. Louis is a city located in St. Clair County, Illinois, USA, directly across the Mississippi River from St. Louis, Missouri. As of the 2000 census, the city had a total population of 31,542. One of the highlights of the city's waterfront is the Gateway Geyser, the tallest fountain in the United States, which spews water to a height of 630 feet and is designed to mirror the Gateway Arch across the river in St. Louis. East St. Louis apartments for rent comparison page shows most up to date rent information on East St. Louis apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.