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New Market is a town in Frederick County, Maryland, United States. The population was 1,525 at the 2020 census. The town bills itself as the "Antiques capital of Maryland".

New Market West is a suburban housing community in Frederick County, in the U.S. state of Maryland. The community is located in the foothills of the Blue Ridge Mountains and is adjacent to the town of New Market.

The New Market Historic District is a national historic district in New Market, Frederick County, Maryland. The district encompasses the town located along what was originally the National Pike (now MD 144). About 90 percent of the buildings in the historic district date from the 19th century and include Federal-style buildings and Greek Revival buildings, with a number of Victorian buildings, a larger example being the Ramsburg House.It was added to the National Register of Historic Places in 1975.

Monrovia is an unincorporated community and census-designated place (CDP) in Frederick County, in the U.S. state of Maryland. As of the 2020 census it had a population of 2,702. The ZIP code for the area is 21770.

Oakdale High School is an American public high school located in Frederick County, Maryland, in Ijamsville, near the city of Frederick.

The "Old National Pike Milestones" marked each mile of the old National Road in Maryland, an eastern coastal state of the United States, from its dominating city of Baltimore to major towns of western Maryland, as Frederick, and between it and Hagerstown, to Hancock, through to Cumberland in the western panhandle of the state in the foothills of the Appalachian Mountains. The surviving stones have been included in the "National Register of Historic Places", maintained by the National Park Service of the U.S. Department of the Interior, and may be seen along the route variously designated as U.S. Route 40, Maryland Route 144, Alternate U.S. Route 40, and several other roads that trace the path of the original "Old National Pike". From Baltimore to Cumberland, the road was surveyed and laid out with construction in several phases over different periods of time by several turnpike companies, chartered by the General Assembly of Maryland beginning in 1808. Earlier in 1806, the United States Congress with the approval of third President Thomas Jefferson, authorized the surveying and further construction of a "national road" to continue on from Cumberland on the upstream of the Potomac River further to the west across additional mountainous ranges in the Allegheny Mountains to the newly admitted State of Ohio (admitted 1803 as the seventeenth state). Later the congressional action was amended to direct the road to the state boundaries on the Ohio River and it eventually landed at Wheeling, West Virginia. In later decades, the road was extended west across Ohio, Indiana and into the Illinois Country, to eventually terminate by the 1840s in Vandalia, the territorial capital of Illinois, just east of the Mississippi River, and northeast of the newly emergent, frontier river port metropolis of St. Louis of the Missouri Territory and the former Louisiana Purchase of 1803 to the west. The "Old Pike" milestones in Maryland are about 30 inches tall, twelve inches wide and eight inches deep, with rounded tops and the inscription XX miles to B, referring to the distance to Baltimore, the road's terminus. The composition of the stones varies, with the first 39 milestones of Baltimore gneiss from the area of Ellicott City. Stones from Frederick to Boonsboro are quartzite from the area of the Monocacy River. A unique white limestone with a distinctive inscription was employed from Boonsboro to Hagerstown, while west of Hagerstown the stones are gray limestone.Sixty-nine stones still remained on the "Old National Pike" at the time the stones were nominated to the National Register.

Sherwood Forest is an unincorporated community in Frederick County, Maryland, United States.

Lake Linganore is a community in Frederick County, in the U.S. state of Maryland, located just outside New Market. The community consists of "villages" which are essentially neighborhoods. The community of villages is centered on a system of lakes, the centerpiece of which is Lake Linganore, a 210-acre (85 ha) reservoir built on Linganore Creek, and the largest privately owned lake in the state. The community has its own newspaper, Lake Talk, which includes articles on local topics. Population statistics for the area are tracked by the U.S. Census Bureau within the Linganore census-designated place.

Balmoral is an unincorporated community in Frederick County, Maryland, United States.

Ijamsville ( EYE-əmz-vil) is an unincorporated community located 7 miles (11 km) southeast of Frederick, in Frederick County, Maryland, United States. The town was founded by Plummer Ijams, a descendant of Welsh immigrants, from whom the town took its name. The discovery of high-quality slate in the area led to Ijamsville's brief era as a mining town, which lasted until it transitioned to agriculture in the mid-1800s. In the mid-to-late 20th century, large quantities of land in Ijamsville were purchased by developers, and the town became primarily residential as a suburb of Frederick, Baltimore, and D.C.

The Thomas Maynard House is a historic home located at New London, Frederick County, Maryland, United States. It is a large 2+1⁄2-story, gable-roofed Georgian residence of random-coursed stone built about 1809.The Thomas Maynard House was listed on the National Register of Historic Places in 1979.

New London is an unincorporated community in Frederick County, Maryland, United States. Thomas Maynard House was listed on the National Register of Historic Places in 1979.