Street, Maryland is a rural unincorporated community in northern Harford County, Maryland. Street was first settled by Dutch immigrants in the early 18th century.

One of the central villages in Street is Highland. The village had a station stop on the Maryland and Pennsylvania Railroad, at milepost 38.6, which served the farms within the area until it ceased passenger service in 1954 and ceased freight service in 1958. The post office for Street, Maryland is located in the village of Highland. The village was once home to Highland High School which later became Highland Elementary School. Highland Elementary School was shut down when the North Harford Elementary School was opened. The large building has other community purposes now, including the alternative Highlands School, Mason-Dixon Community Service, Highland Senior Center and the Street post office. The Habonim Dror Camp Moshava is also located in Street.

The Col. John Streett House was listed on the National Register of Historic Places in 1973.[2] Gladden Farm and Mill Green Historic District were listed in 1993.

Picturesque landscapes adorned with sprawling farm homes, rambling hills, and bustling villages characterize scenic north Harford. The immense natural area, bordered by southern Pennsylvania and the Susquehanna River, has been largely preserved for agriculture and is home to a thriving thoroughbred breeding industry. Formerly the home of an enterprising slate and green marble mining industry, area attractions now include Fiore Winery, a lively vineyard recognized internationally for their award winning spirits, Geneva Farm Golf Course, a challenging public 18-hole green, and Rock State Park, a wooded treasure distinguished by unique stone landmarks and breathtaking waterfalls. Numerous outdoor festivals and events take place annually including the Fiore Wine and Jazz Festival, the Darlington Apple Festival, town fairs, polo matches, fox hunts, and steeple chase races.