Elkridge is an unincorporated community and census-designated place in Howard County, Maryland, United States. Founded early in the 18th century, Elkridge is located at the confluence of three counties, the other two being Anne Arundel and Baltimore counties. It is bordered to the north by Ilchester, to the northwest by Columbia, to the southwest by Jessup, to the southeast by Anne Arundel County, and to the northeast, across the Patapsco River, by Halethorpe (part of the Arbutus CDP) in Baltimore County.
Elkridge includes a range of recreational areas throughout the town. Patapsco Valley State Park runs along the Patapsco River in North Elkridge, with entrances on Landing Road, River Road, and South Street in nearby Relay. Rockburn Branch Park in West Elkridge provides athletic fields, playgrounds, and nature trails. Also in West Elkridge, Belmont Manor and Historic Park hosts private events as well as nature programs with the Howard County Conservancy and surrounding schools. Elkridge is home to a number of small tributaries of the main waterway, the Patapsco River, that are used for recreation.
Elkridge has several K–12 educational facilities: Rockburn Elementary School, Elkridge Elementary School, the newly constructed Ducketts Lane Elementary School. Elkridge middle schools include Elkridge Landing Middle School on Montgomery Road and Mayfield Woods Middle School off of Mayfield Avenue. High school students in Elkridge usually attend either Howard High School in Ellicott City or Long Reach High School in Columbia.