Frederick is both a city in and the county seat of Frederick County. Frederick’s close proximity to Washington D.C. has been a large developmental factor in the local economy and has been drastically influenced recently by it being a cancer research center. Its economy has also been strongly influenced by education, government, health care, mortgage and insurance, banking, science and engineering, tourism, transportation, retail and construction. Rt. 15 and Rt. 40 both flow through Frederick, giving easy access to nearby highways. Also, I-70 runs directly through town, which is easily accessed and brings people from all around to town.