Marydel is an incorporated town in Caroline County, Maryland, United States. The population was 141 at the 2010 United States Census. Its name is a portmanteau, after its location, being partially located in Maryland and partially in Delaware. Marydel was originally known as Halltown.
Publisher James Gordon Bennett Jr. participated in a duel near Marydel in 1877.
Marydel is located at (39.1130, -75.7468).
According to the United States Census Bureau, the town has a total area of , all land.
The town of Marydel was settled by Austro-Hungarian Catholic farmers circa 1914, around the time that the Austro-Hungarian Empire was about to plunge Europe into World War I, and some immigrants from that area came to the United States. In recent times, beginning in the 1990s, the town became home to a large community of Hispanic immigrants of Guatemalan descent. The majority of these Guatemalan immigrants came from an agricultural, rural, mountainous regions