| General Information | |
|---|---|
| Country | United States |
| State/Province | Virginia |
| Major City | Herndon |
| Time Zone | Eastern (UTC-05:00) |
| Current Local Time | 01:28 |
| Prefix | County | Primary City |
|---|---|---|
| 571-201 | Fairfax | Vienna |
| 571-203 | Fairfax | Herndon |
| 571-204 | Falls Church City | Falls Church |
| 571-205 | Falls Church City | Falls Church |
| 571-206 | Loudoun | Leesburg |
| 571-207 | Loudoun | Leesburg |
| 571-208 | Prince William | Manassas |
| 571-209 | Loudoun | Leesburg |
| 571-210 | Loudoun | Ashburn |
| 571-212 | Arlington | Arlington |
| 571-213 | Arlington | Arlington |
| 571-214 | Arlington | Arlington |
| 571-215 | Arlington | Arlington |
| 571-216 | Arlington | Arlington |
| 571-217 | Arlington | Arlington |
| 571-218 | Arlington | Fort Myer |
| 571-219 | Arlington | Arlington |
| 571-220 | Arlington | Arlington |
| 571-221 | Arlington | Arlington |
| 571-222 | Prince William | Haymarket |
| 571-223 | Loudoun | Leesburg |
| 571-224 | Fairfax | Vienna |
| 571-225 | Arlington | Arlington |
| 571-226 | Fairfax | Dunn Loring |
| 571-227 | Arlington | Fort Myer |
| 571-228 | Arlington | Arlington |
| 571-229 | Prince William | Manassas |
| 571-230 | Arlington | Fort Myer |
| 571-231 | Fairfax | Alexandria |
| 571-232 | Arlington | Arlington |
| 571-233 | Loudoun | Leesburg |
| 571-234 | Fairfax | Vienna |
| 571-235 | Arlington | Arlington |
| 571-236 | Arlington | Arlington |
| 571-237 | Arlington | Arlington |
| 571-238 | Arlington | Arlington |
| 571-239 | Arlington | Arlington |
| 571-241 | Arlington | Arlington |
| 571-242 | Arlington | Arlington |
| 571-243 | Arlington | Arlington |
| 571-244 | Arlington | Arlington |
| 571-245 | Arlington | Arlington |
| 571-246 | Loudoun | Leesburg |
| 571-247 | Prince William | Manassas |
| 571-248 | Prince William | Haymarket |
| 571-249 | Arlington | Fort Myer |
| 571-250 | Fairfax | Reston |
| 571-251 | Arlington | Arlington |
| 571-252 | Loudoun | Leesburg |
| 571-253 | Arlington | Fort Myer |