Dundalk ( /ˈdʌndɔːk/ DUN-dawk or /ˈdʌndɒk/ DUN-dok) is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. The population was 63,597 at the 2010 census. In 1960 and 1970, Dundalk was the largest unincorporated community in Maryland. It was named after the town of Dundalk, Ireland. Dundalk is considered one of the first inner-ring suburbs of Baltimore.
According to the United States Census Bureau, the CDP has a total area of 17.4 square miles (45.0 km), of which 13.1 square miles (33.8 km) is land and 4.3 square miles (11.2 km), or 24.84%, is water.
Most of Dundalk is flat and very near sea level, with a few small hills close to the city of Baltimore to the west. Dundalk is part of the Atlantic Coastal Plain. Elevations range from sea level on the shore of the Chesapeake Bay to approximately 40 feet (12 m) above sea level along the northern reaches of Dundalk Avenue and North Point Boulevard.
Bread and Cheese Creek is a tributary of the Back River in Dundalk. The creek is 8.5 miles (13.7 km) long, with headwaters in Baltimore City. It flows through Dundalk before emptying into the Back River, which flows into the Chesapeake Bay. The watershed area of the creek is 1.85 square miles (4.8 km).
As of the census of 2010, there were 63,597 people. The racial makeup of Dundalk was 79.2% white, 11.0% African American, 5.0% Hispanic, 1.7% Asian, and 3.1% all other.
There were 24,772 households out of which 29.2% had children under the age of 18 living with them, 46.5% were married couples living together, 16.1% had a female householder with no husband present, and 31.5% were non-families. 26.4% of all households were made up of individuals and 13.0% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.98.
In the CDP, the population was spread out with 23.9% under the age of 18, 7.4% from 18 to 24, 28.4% from 25 to 44, 22.6% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 91.3 males. For every 100 females age 18 and over, there were 87.4 males.
The median income for a household in the CDP was $39,789, and the median income for a family was $46,035. Males had a median income of $36,512 versus $25,964 for females. The per capita income for the CDP was $18,543. About 6.6% of families and 9.2% of the population were below the poverty line, including 13.3% of those under age 18 and 6.9% of those age 65 or over.