Welcome to Frederick County, Maryland!

Rolling black rock mountains and bright green pastures greet visitors to Frederick County, the largest county in the state with 664 square miles. 

While agriculture is an important industry, Frederick County offers a wide diversity of benefits for those who live, work, and visit here.

With a highly rated public school system and close-by institutions of higher education, cities bustling with business from antiques to restaurants to fashion wear, and historical attractions that draw thousands from across the country, Frederick County is a well-traveled destination for many.