Lebanon is a city in St. Clair County

St. Clair County, Illinois

St. Clair County is a county located in the U.S. state of Illinois. In 1970, the U.S. Census Bureau placed the mean center of U.S. population in St. Clair County. According to the 2010 census, it has a population of 270,056, which is an increase of 5.5% from 256,082 in 2000. Its county seat is...

, Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. The population was 3,523 at the 2000 census. Like many other places in "Little Egypt

Little Egypt (region)

-Early history:The earliest inhabitants of Illinois were thought to have arrived about 12,000 B.C. They were hunter-gatherers, but developed a primitive system of agriculture. After 1000 AD, their agricultural surpluses enabled them to develop complex, hierarchical societies...

" or Southern Illinois, Lebanon was named after the Middle Eastern country of the same name. It is a part of the Metro-East

Metro-East

Metro East is a region in Illinois that comprises the eastern suburbs of St. Louis, Missouri, United States. It encompasses five Southern Illinois counties in the St. Louis Metropolitan Statistical Area. The region's most populated city is Belleville at 45,000 residents...

 region of the Greater St. Louis metropolitan area.

Lebanon is home to McKendree University, the oldest college in Illinois.

• Emerald Mound and Village Site
• Lebanon Historic District
• Mermaid House Hotel
  Mermaid House Hotel
  Mermaid House Hotel, located on East St. Louis Street in Lebanon, Illinois, was built in 1830 by the retired New England sea captain Lyman Adams...
  
  

Lebanon is located at 38°36′12"N 89°48′41"W (38.603398, -89.811271).

According to the United States Census Bureau

United States Census Bureau

The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

, the city has a total area of 2.2 square miles (5.7 km²), all of it land.
As of the census

Census

A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...

of 2010, there were 5,523 people, 2,275 households, and 804 families residing in the city.