Washington, D.C., located in zip code 20317, is a hub of transportation options for visitors and residents alike. The public transportation system in the region includes an extensive Metrorail network with six different lines that run throughout the area and provide access to areas such as Alexandria, Arlington, Bethesda, and Silver Spring. Additionally, several bus systems serve the city, including the DC Circulator which provides free service within downtown Washington. For those wishing to travel outside the city’s limits but stay within close proximity, public transportation options extend into Maryland, Virginia and other suburban areas. In addition to public transport options there are many taxi services available throughout D.C., as well as bike share programs such as Capital Bikeshare which allows customers to rent bikes from any location for short-term use.