Lebanon is located at . According to the United States Census Bureau, the city has a total area of, of which is land and is water.
Demographics
2010 census
As of the census of 2010, there were 14,474 people, 5,980 households, and 3,745 families living in the city. The population density was. There were 6,728 housing units at an average density of. The racial makeup of the city was 94.1% White, 1.3% African American, 0.6% Native American, 0.7% Asian, 0.1% Pacific Islander, 0.7% from other races, and 2.4% from two or more races. Hispanic or Latino of any race were 2.6% of the population. There were 5,980 households, of which 34.0% had children under the age of 18 living with them, 43.6% were married couples living together, 13.7% had a female householder with no husband present, 5.3% had a male householder with no wife present, and 37.4% were non-families. 31.8% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.94. The median age in the city was 35.4 years. 25.9% of residents were under the age of 18; 9.7% were between the ages of 18 and 24; 25.9% were from 25 to 44; 22.5% were from 45 to 64; and 15.8% were 65 years of age or older. The gender makeup of the city was 47.5% male and 52.5% female.
2000 census
As of the census of 2000, there were 12,155 people, 5,132 households, and 3,181 families living in the city. The population density was 891.9 people per square mile. There were 5,745 housing units at an average density of 421.6 per square mile. 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. There were 5,132 households, out of which 30.6% had children under the age of 18 living with them, 45.8% were married couples living together, 12.3% had a female householder with no husband present, and 38.0% were non-families. 33.4% of all households were made up of individuals, and 16.6% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 2.91. In the city, the population was spread out, with 25.2% under the age of 18, 10.1% from 18 to 24, 27.4% from 25 to 44, 19.5% from 45 to 64, and 17.9% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 88.2 males. For every 100 females age 18 and over, there were 82.9 males. The median income for a household in the city was $27,668, and the median income for a family was $36,509. Males had a median income of $27,657 versus $17,509 for females. The per capita income for the city was $16,636. About 12.3% of families and 15.2% of the population were below the poverty line, including 17.4% of those under age 18 and 18.0% of those age 65 or over.
