Arnold, Maryland

Arnold, a census-designated place (CDP) in Anne Arundel County, Maryland, United States, located just outside of the state's capital, Annapolis. It is located 18.78 miles south of Baltimore, and 29.97 miles east of Washington, D.C. The population was 23,106 at the 2010 census. Neighborhoods straddle College Parkway and Maryland Route 2 (Ritchie Highway). Arnold is located on the scenic Broadneck Peninsula. The ZIP code is 21012. It is bordered by Severna Park to the northwest, Cape Saint Claire to the southeast, Annapolis to the southwest, and Lake Shore (a CDP within Pasadena) to the northeast.