Lexington Park is a census-designated place (CDP) in St. Mary’s County, Maryland, United States, and the principal community of the Lexington Park, Maryland Micropolitan Statistical Area. The population was 11,626 at the 2010 census.
Lexington Park is located at 38°15′32″N 76°27′2″W / 38.25889°N 76.45056°W / 38.25889; -76.45056 (38.258906, −76.450592).
According to the United States Census Bureau, the CDP has a total area of 8.1 square miles (21 km), of which, 8.0 square miles (21 km) of it is land and 0.1 square miles (0.26 km) of it (1.24%) is water.
As of the census of 2000, there were 11,021 people, 3,923 households, and 2,459 families residing in the CDP. The population density was 1,378.9 people per square mile (532.6/km²). There were 4,630 housing units at an average density of 579.3/sq mi (223.7/km²). The racial makeup of the CDP was 59.99% White, 30.00% African American, 0.38% Native American, 4.22% Asian, 0.12% Pacific Islander, 1.81% from other races, and 3.48% from two or more races. Hispanic or Latino of any race were 4.78% of the population.
There were 3,923 households out of which 41.8% had children under the age of 18 living with them, 43.9% were married couples living together, 14.7% had a female householder with no husband present, and 37.3% were non-families. 29.5% of all households were made up of individuals and 2.1% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.34.
In the CDP, the population was spread out with 31.5% under the age of 18, 14.0% from 18 to 24, 39.3% from 25 to 44, 12.2% from 45 to 64, and 3.1% who were 65 years of age or older. The median age was 27 years. For every 100 females, there were 114.5 males. For every 100 females age 18 and over, there were 120.5 males.
The median income for a household in the CDP was $39,214, and the median income for a family was $42,095. Males had a median income of $30,762 versus $24,155 for females. The per capita income for the CDP was $17,605. About 9.9% of families and 11.9% of the population were below the poverty line, including 14.4% of those under age 18 and 10.6% of those age 65 or over.