240 Area Code 🌍☎️

Frederick is a city and county seat in Frederick County, Maryland, with a 2020 population of 78,171, making it the second-largest incorporated city in the state behind Baltimore and part of the Washington metropolitan area. Located at the intersection of major north-south and east-west routes connecting the Chesapeake Bay, the Appalachian Mountains, and the Ohio River watershed, Frederick has served as a strategic crossroads since Native American tribes including the Susquehannock, Shawnee, and Iroquois Confederation traveled the Monocacy Trail through the region. Founded by land speculator Daniel Dulany around 1745 and officially designated as Frederick County's county seat in 1748, the city was settled primarily by German immigrants from the Rhineland Palatinate, whose heritage is preserved in landmarks like the Schifferstadt Architectural Museum, built in 1756. Today, Frederick is home to Fort Detrick, a U.S. Army bioscience and communications research installation and the county's largest employer, as well as Frederick Municipal Airport (FDK), which serves general aviation. The city's location at the meeting point of Catoctin Mountain and the Piedmont region's rolling hills has made it an economically and strategically important hub since its colonial founding. Laurel is a city in Prince George's County, Maryland, located between Washington, D.C., and Baltimore on the Patuxent River, with a 2020 census population of 30,060 and part of the Washington Metropolitan Area. Founded as a mill town in the early 19th century by the Snowden family on land patented in 1658, Laurel's economy expanded dramatically after the Baltimore and Ohio Railroad arrived in 1835, when the Patuxent Manufacturing Company chartered its cotton mills and built housing for nearly 300 workers. The city is home to a 7.5-acre park containing the most prolific Cretaceous Era dinosaur fossil site in the eastern United States, yielding fossilized teeth from Astrodon and Priconodon species. Originally known as "Laurel Factory" when Edward Snowden became its first postmaster in 1837, the community evolved from a company town into an early commuter suburb for Washington and Baltimore workers in the latter 19th century. Laurel maintains a historic district centered on Main Street, with three notable 1800s churches still active: St. Philip's Episcopal (1839), the Methodist church (1842), and St. Mary of the Mills Roman Catholic (1845). Rockville is the county seat of Montgomery County, Maryland, located in the Washington metropolitan area with a 2020 population of 67,117, making it the fourth-largest incorporated city in Maryland. Situated in the Piedmont region and crossed by Rock Creek, Cabin John Creek, and Watts Branch, the area attracted semi-nomadic Native Americans as early as 8000 BC, with documented prehistoric sites and artifacts several thousand years old within the city's present boundaries. The settlement emerged along the Sinequa Trail (now downtown Rockville) and gained prominence when Major General Edward Braddock stopped at Owen's Ordinary on April 14, 1755, during his mission from George Town to the western frontier. Rockville became the county seat when Montgomery County was established on September 6, 1776, carved from the division of Frederick County by Thomas Sprigg Wootton's proposal. Today, Rockville forms the core of the Interstate 270 Technology Corridor alongside Gaithersburg and Bethesda, housing numerous software and biotechnology companies, federal government institutions, and serving as a major retail hub with upscale regional shopping centers.