| | | Alexandria city | VA | 51510 | Arlington-Alexandria-Reston,
VA-WV 11694 | Washington-Arlington-Alexandria,
DC-VA-MD-WV 47900 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of > 1m | federal/state
government-dependent | https://maps.google.com/?q=Alexandriacity+VA |
| | | Anne Arundel County | MD | 24003 | | Baltimore-Columbia-Towson,
MD 12580 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of > 1m | federal/state
government-dependent | https://maps.google.com/?q=AnneArundelCounty+MD |
| | | Arlington County | VA | 51013 | Arlington-Alexandria-Reston,
VA-WV 11694 | Washington-Arlington-Alexandria,
DC-VA-MD-WV 47900 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of > 1m | federal/state
government-dependent | https://maps.google.com/?q=ArlingtonCounty+VA |
| | | Baltimore city | MD | 24510 | | Baltimore-Columbia-Towson,
MD 12580 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of > 1m | federal/state
government-dependent | https://maps.google.com/?q=Baltimorecity+MD |
| | | Baltimore County | MD | 24005 | | Baltimore-Columbia-Towson,
MD 12580 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of > 1m | nonspecialized | https://maps.google.com/?q=BaltimoreCounty+MD |
| | | Berkeley County | WV | 54003 | | Hagerstown-Martinsburg,
MD-WV 25180 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of > 250k
< 1m | federal/state
government-dependent | https://maps.google.com/?q=BerkeleyCounty+WV |
| | | Calvert County | MD | 24009 | | Lexington Park, MD 30500 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Central | in metro of < 250k | recreation | https://maps.google.com/?q=CalvertCounty+MD |
| | | Carroll County | MD | 24013 | | Baltimore-Columbia-Towson,
MD 12580 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Outlying | in metro of > 1m | nonspecialized | https://maps.google.com/?q=CarrollCounty+MD |
| | | Charles County | MD | 24017 | Washington, DC-MD 47764 | Washington-Arlington-Alexandria,
DC-VA-MD-WV 47900 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Outlying | in metro of > 1m | nonspecialized | https://maps.google.com/?q=CharlesCounty+MD |
| | | Clarke County | VA | 51043 | Arlington-Alexandria-Reston,
VA-WV 11694 | Washington-Arlington-Alexandria,
DC-VA-MD-WV 47900 | Washington-Baltimore-Arlington,
DC-MD-VA-WV-PA 548 | Outlying | in metro of > 1m | nonspecialized | https://maps.google.com/?q=ClarkeCounty+VA |
