Founded in 1846, Arlington County is one of 95 counties in the state of Virginia. Historically, Arlington County was formed from Annexed from the District of Columbia, having previously been part of Fairfax County prior to the district’s formation. The city of Arlington is the county seat. With FIPS code of 13, Arlington County has a population of 232,965 and area of 26 square miles (67 km2).
List of all cities in Arlington County, VA alphabetically
| City/Town | Postal Code | Area Code |
| Arlington, VA | 22201 | 703/571 |
| 22202 | 703/571 | |
| 22203 | 703/571 | |
| 22204 | 703/571 | |
| 22205 | 703/571 | |
| 22206 | 703/571 | |
| 22207 | 703/571 | |
| 22209 | 703/571 | |
| 22210 | 703/571 | |
| 22211 | 703/571 | |
| 22212 | 703/571 | |
| 22213 | 703/571 | |
| 22214 | 703/571 | |
| 22215 | 703/571 | |
| 22216 | 703/571 | |
| 22217 | 703/571 | |
| 22219 | 703/571 | |
| 22222 | 703/571 | |
| 22225 | 703/571 | |
| 22226 | 703/571 | |
| 22227 | 703/571 | |
| 22230 | 703/571 | |
| 22240 | 703/571 | |
| 22241 | 703/571 | |
| 22242 | 703/571 | |
| 22243 | 703/571 | |
| 22244 | 703/571 | |
| 22245 | 703/571 | |
| 22246 | 703/571 | |
| Assistant Secretary of Navy, VA | 22244 | 703/571 |
| Crystal City, VA | 22202 | 703/571 |
| Dept of the Navy, VA | 22225 | 703/571 |
| FDIC, VA | 22226 | 703/571 |
| Fort Myer, VA | 22211 | 703/571 |
| Marine Corps Institute, VA | 22222 | 703/571 |
| National Science Foundation, VA | 22230 | 703/571 |
| Naval Air System Command, VA | 22243 | 703/571 |
| Naval Supply System Command, VA | 22241 | 703/571 |
| Navy Mutual Aid Assoc, VA | 22212 | 703/571 |
| Navy Sea Systems Command, VA | 22242 | 703/571 |
| Office of Naval Research, VA | 22217 | 703/571 |
| Rosslyn, VA | 22209 | 703/571 |
| South, VA | 22204 | 703/571 |
| Space & Naval Warfare System, VA | 22245 | 703/571 |
| U S Air, VA | 22227 | 703/571 |
| Us Navy Accounting Office, VA | 22240 | 703/571 |
| US Unmanned Aerial Vehicles, VA | 22246 | 703/571 |