City levels are determined by the county in which they are located. If the city is not named below, it may be located within a county listed below. Visit the National Association of Counties website and type the city name into the "City/Zip Search" tab to determine the city's county. If the city is not listed below or is not located in a county below, that city is a Level 1.
| Level | Washington D.C. | County |
|---|---|---|
| 4 | District of Columbia | All of Washington D.C. |
| Level | Surrounding Areas | County |
|---|---|---|
| 4 | Cities in Maryland Counties | Montgomery and Prince George (Maryland) |
| 4 | Alexandria, Virginia | Fairfax County, Virginia |
| 4 | Falls Church, Virginia | Fairfax County, Virginia |
| 4 | Fairfax, Virginia | Fairfax County, Virginia |
| 4 | Cities in Virgina Counties | Arlington and Fairfax (Virginia) |