Thurmont is a town in Frederick County, Maryland, United States. The population was 6,170 at the 2010 census. The town is located in the northern part of Frederick County (north of Frederick, the county seat), approximately ten miles from the Pennsylvania border, along U.S. Highway 15. It is very close to Cunningham Falls State Park and Catoctin Mountain Park, the latter of which contains the presidential retreat of Camp David. Thurmont is also home to Catoctin Colorfest, an arts and crafts festival that draws in about 125,000 people each autumn.
In 2005, Thurmont was designated as a "Main Street Maryland Community".
Originally incorporated as the Town of Mechanicstown in 1751, the name of the town was changed to Thurmont by an act of Maryland General Assembly on January 18, 1894. This name change was due to several other nearby towns having similar names, such as Mechanicsburg, Pennsylvania and Mechanicsville, Maryland. Charles E. Cassell, editor of the local newspaper Catoctin Clarion was the one to suggest the name Thurmont and promoted debate about the name change in the Clarion. Some of the names considered included Beaufort, Eastmont, Glenmont, Monduru, Fern Glen, and Blue Point. Eventually, the options were pared down to two main contenders: Cassell's suggestion of Thurmont, and local real estate broker Charles Shipley's suggestion of Blue Mountain City, which he argued was "appropriate" and "pretty" during an address at a town meeting in December 1893.