Rosedale is an unincorporated community and census-designated place in Baltimore County, Maryland, United States.

However, according to anecdotal evidence, a fourth-grade class in 1950 was instructed to conduct interviews with local residents regarding the history of the Rosedale community.

From their interviews, a possible explanation emerged: A young Englishman had a farm on Hamilton Avenue just above Philadelphia Road.

In the latter part of the nineteenth century, this area was settled by new waves of immigrants, mostly from Germany and Poland.

A 1940 article was written about the 59th wedding anniversary of Charles Schatzschneider and his wife; they had been immigrants who settled in this area.

Charles Schatzschneider was born in Germany in 1859 and came at the age of 13 to the United States as a farm laborer.

During their lives they saw the area develop from a rather primitive rural community to one with gas and electric lighting, water and sewerage systems and paved streets.

When this couple had first come to the area, great three-masted schooners could sail all the way up Back River to the heading.

On 8 March 1909, an African American man named William Ramsey was lynched in the town.

[3] The first school, a wooden building with two rooms, was built on the corner of Hamilton Avenue and Philadelphia Road.

Beginning in the 1950s, aided by federal subsidies of new highways, new residential development was built in the suburbs of Baltimore and other major cities.