Washington Air Route Traffic Control Center (ZDC) is an Area Control Center operated by the Federal Aviation Administration and located at Lawson Rd SE, Leesburg, Virginia, United States. The primary responsibility of ZDC is the separation of airplane flights and the expedited sequencing of arrivals and departures along STARs (Standard Terminal Arrival Routes) and SIDs (Standard Instrument Departures) for the Washington-Baltimore Metropolitan Area, the New York Metropolitan Area, and Philadelphia among many other areas.

Washington Center is the second busiest (after Atlanta) ARTCC in the United States. Between January 1, 2017 and December 31, 2017, Washington Center handled 2,554,410 aircraft operations.^[1] The Washington ARTCC covers 165,000 square miles (430,000 km²) of airspace that includes airports in Maryland, Pennsylvania, West Virginia, Delaware, New Jersey, Virginia, and North Carolina.

ZDC is divided into 8 areas, numbered 1 through 8, that make up 46 sectors. They are mainly broken down into low altitude, intermediate, high altitude and Super High Altitude sectors. There are 18 low sectors, 14 high sectors, 5 super high sectors and 4 various other type sectors, including 1 high/low altitude sector and 3 intermediate altitude sectors.

• 72 Shenandoah SHD 127.925 MHz/269.375 MHz
• 07 Wahoo WAH 121.925 MHz/346.375 MHz

During periods of traffic saturation in the Shenandoah Sector, ZDC will split the Shenandoah sector into two sectors, making Wahoo a second Super High Sector over the Roanoke and Lynchburg, Virginia areas. Shenandoah normally overlaps the Tech High and Gordonsville High Sectors above FL330. When traffic demand is high, Wahoo is activated to overlap the Gordonsville High Sector above FL330 covering J37 and J75 from GVE VOR south while Shenandoah will overlap Tech High Sector above FL 330 and cover traffic on J48 from CSN VOR south, J22 from MOL VOR south and J53 south of ASBUR intersection near LWB VOR.

• 32 Gordonsville GVE 133.725/351.900
• 52 Tech TEC 133.575/270.350

• 60 Montebello MOL 121.675/284.700

• 31 Azalea AZA 135.400/263.100

• 36 Raleigh RDU 118.925/322.450

• 26 Sampson SAM 135.300/285.500
• 27 Liberty LIB 135.200/348.650
• 28 Rocky Mount RMT 118.475/279.650

• 37 Marlinton MAR 133.025/323.025

• 02 Casanova CSN 133.200/282.200
• 05 Linden LDN 133.550/322.550
• 22 South Boston SBV 124.050/352.000
• 29 NEW Valley VAL (formerly Hot Springs HSP)134.400/353.900

Sector 30 OLD Valley VAL has been changed to NEW 72 Shenandoah SHD Super Hi Sector in Area 1 above. Old Valley Sector merged into Sector 29 Hot Springs.

• 42 Bryce BRY 118.025/226.675

• 03 Moorefield MOR 133.275/371.900
• 04 Pinion PIN 133.975/307.025

• 01 Elkins EKN 128.600/387.100
• 06 Hagerstown HGR 134.150/227.125
• 15 Blue Ridge BLR 133.650/285.600

• 39 Snow Hill SWL 121.375/236.825
• 50 Yorktown YKT 120.75/317.725

• 34 Norfolk ORF 133.825/327.800
• 54 Salisbury SBY 120.975/257.700

• 23 Cape Charles CCV 132.550/256.80
• 51 Casino CAS 127.700/285.400
• 53 Kenton ENO 132.050/354.150

• 09 Dixon DIW 118.825/360.650

• 35 Wilmington ILM 124.025/269.150
• 38 Tar River TYI 132.225/354.100

• 24 Cofield CVI 123.850/323.000
• 25 New Bern EWN 135.500/281.425
• 33 Franklin FKN 132.025/290.425

• 10 Bay BAY 132.275/379.300
• 12 Brooke BRV 126.875/327.000
• 16 Hopewell HPW 121.875/323.225

• 11 Calvert CAL 133.900/281.400
• 20 Blackstone BKT 127.750/235.625

• 14 Irons IRS 132.950/351.800
• 21 Dominion DOM 118.750/377.100

• 58 Coyle CYN 121.025/254.300
• 59 Sea Isle SIE 133.125/281.450

• 19 Woodstown OOD 125.450/363.000
• 18 DuPont DQO 132.525/287.900

• 17 Swann SWN 134.500/360.700

• Washington ARTCC on IVAO
• Washington Air Route Traffic Control Center
• Washington Center Weather Service Unit (CWSU) (NWS/FAA)

39°06′06″N 77°32′34″W / 39.1016°N 77.5429°W / 39.1016; -77.5429