Lebanon is a city in Laclede County, Missouri, United States. The estimated population in July 2009 was 14,292. The population was 12,155 at the 2000 census. It is the county seat of Laclede County. The Lebanon Micropolitan Statistical Area consists of Laclede County.
Lebanon is located at 37°40′42″N 92°39′42″W / 37.67833°N 92.66167°W / 37.67833; -92.66167 (37.678203, -92.661694). According to the United States Census Bureau, the city has a total area of 13.7 square miles (35.4 km²), of which, 13.6 square miles (35.3 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.22%) is water.
As of the census of 2000, there were 12,155 people, 5,132 households, and 3,181 families residing in the city. The population density was 891.9 people per square mile (344.3/km²). There were 5,745 housing units at an average density of 421.6 per square mile (162.7/km²). The racial makeup of the city was 95.99% White, 0.90% African American, 0.54% Native American, 0.50% Asian, 0.03% Pacific Islander, 0.42% from other races, and 1.61% from two or more races. Hispanic or Latino of any race were 1.65% of the population.