Baltimore
Services Delaware, with the exception of New Castle County; the District of Columbia.
In Maryland, services:
| Anne Arundel | Dorchester | Queen Anne's |
| Baltimore | Frederick | Somerset |
| Calvert | Harford | St. Mary's |
| Caroline | Howard | Talbot |
| Carroll | Kent | Washington |
| Cecil | Montgomery | Wicomico |
| Charles | Prince George's | Worcester Counties |
In Pennsylvania, services:
| Adams | Franklin | York Counties |
| Cumberland |
In Virginia, services:
| Accomack | Goochland | Northumberland |
| Albemarle | Greene | Nottoway |
| Amelia | Greensville | Orange |
| Arlington | Hanover | Page |
| Augusta | Henrico | Powhatan |
| Brunswick | Isle of Wight | Prince Edward |
| Buckingham | James City | Prince George |
| Caroline | King and Queen | Prince William |
| Charles City | King George | Rappahannock |
| Chesterfield | King William | Richmond |
| Clarke | Lancaster | Rockingham |
| Culpeper | Loudoun | Shenandoah |
| Cumberland | Louisa | Southampton |
| Dinwiddie | Lunenberg | Spotsylvania |
| Essex | Madison | Stafford |
| Fairfax | Mathews | Surry |
| Fauquier | Middlesex | Sussex |
| Fluvanna | Nelson | Warren |
| Frederick | New Kent | Westmoreland |
| Gloucester | Northampton | York Counties |
the independently incorporated Virginia cities not part of, but located within or adjacent to, the territory defined by these Virginia counties
In West Virginia, services:
| Berkeley | Jefferson |
| Hampshire | Morgan Counties |
Persons may also obtain service at the Resident Office located in Washington, D.C.
Established in 1935, the National Labor Relations Board is an independent federal agency that protects employees, employers, and unions from unfair labor practices and protects the right of private sector employees to join together, with or without a union, to improve wages, benefits and working conditions. The NLRB conducts hundreds of workplace elections and investigates thousands of unfair labor practice charges each year. Region 5 serves areas in Delaware, Maryland, Virginia, West Virginia, and the District of Columbia from its Regional Office in Baltimore and its Resident Office in the District of Columbia.