where on the map is ellicott city maryland
Ellicott City, Maryland Ellicott City is in northeastern Howard County, bordered to the east and north by the Patapsco River, which forms the Baltimore County line. The Ellicott City census-designated place (CDP) extends to the northwest beyond Marriottsville Road and to the southwest beyond Centennial Road. It is bordered to the south by Columbia at Maryland Route 108 and to the southeast by Ilchester at Maryland Route 104 and Bonnie Branch Road. According to the United States Census Bureau, the CDP has a total area of 30.1 square miles (77.9 km2), of which 30.0 square miles (77.6 km2) are land and 0.1 square miles (0.3 km2), or 0.41%, are water.[4]