Overlea is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. The population was 12,275 at the 2010 census. Students attend Overlea High School. Area roads include Belair Road (U.S. Route 1) and Kenwood Avenue (Maryland Route 588).
Overlea is located at 39°21′40″N 76°31′10″W / 39.36111°N 76.51944°W / 39.36111; -76.51944 (39.361107, −76.519535).
According to the United States Census Bureau, the CDP has a total area of 3.1 square miles (8.0 km), all of it land.
As of the census of 2000, there were 12,148 people, 4,951 households, and 3,317 families residing in the CDP. The population density was 3,950.6 people per square mile (1,522.8/km²). There were 5,152 housing units at an average density of 1,675.4/sq mi (645.8/km²). The racial makeup of the CDP was 87.74% White, 8.78% African American, 0.30% Native American, 1.79% Asian, 0.02% Pacific Islander, 0.23% from other races, and 1.14% from two or more races. Hispanic or Latino of any race were 1.39% of the population.
There were 4,951 households out of which 28.6% had children under the age of 18 living with them, 51.1% were married couples living together, 11.6% had a female householder with no husband present, and 33.0% were non-families. 26.9% of all households were made up of individuals and 12.0% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.99.
In the CDP, the population was spread out with 22.9% under the age of 18, 7.7% from 18 to 24, 30.8% from 25 to 44, 22.4% from 45 to 64, and 16.2% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 92.6 males. For every 100 females age 18 and over, there were 89.1 males.
The median income for a household in the CDP was $48,242, and the median income for a family was $57,075. Males had a median income of $40,349 versus $30,167 for females. The per capita income for the CDP was $23,402. About 3.6% of families and 5.2% of the population were below the poverty line, including 5.1% of those under age 18 and 7.7% of those age 65 or over.