MW4 DMZ Hajin Key Locations – All 44 Keys

Every known DMZ key on the Hajin map in Call of Duty: Modern Warfare 4 (MW4 DMZ): which door each key opens, the grid square, the area, what's inside and where the key comes from, Want them on a map? Open the interactive Hajin key map (free sign-up) with exfils, nearest-exfil routes and a looted checklist.

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DMZ keys list – all Hajin keys at a glance

Key	Area	Grid	Rarity
Counting Room Vault	Cheongun Village	F4	Epic
Vault Armory	Cheongun Village	F4	Epic
Train Depot Storageroom	Cheongun Village	E5	Rare
Mechanic’s Shack	Cheongun Village	F5	Rare
Mirae Electrical Room	Mirae General Hospital	F5	Rare
The Doctor’s Command Office	Mirae General Hospital	F5	Legendary
Coin Mining Den	NuriGO Mall	G6	Rare
Warden’s Loot Room (name unknown)	NuriGO Mall	?	?
Executive Arms Auction	The Grid	G6	Epic
Netshin IT Room	The Grid	G6	?
Roze’s Highrise Armory	The Grid	G6	Legendary
Shop Records Room	Wolves Stadium	F7	Rare
Militia Arms Depot	Hajin River Heights	G7	Rare
Police Station Armory	Police Stations	varies	—
Reactor 02 Control Room	Haneul Nuclear Reactor	I4	Rare
Reactor DRC Locker	Haneul Nuclear Reactor	H4	Ultra
The Chemist’s Secure Armory	Haneul Nuclear Reactor	I4	Legendary
The Citadel South Wing	14th Political Prison	?	Uncommon
Field Depot	Chang-san Air Base	?	?
Commandant Office	Chang-san Air Base	?	?
Air Base DRC Weapons Locker	Chang-san Air Base	B6	Ultra
Re-Education Center Annex	Deadtown	B7	Epic
Underground Propaganda Store Room	Deadtown	?	?
Haksan School Armory	Deadtown	B7	Rare
Rice Mill Bunker	Imjin Farmland	D7/D8	?
Imjin Mill Foreman’s Office	Imjin Farmland	D8	Rare
Iskra’s Control Room	Cheonwang Peak Array	F7	Legendary
Gas Station Electrical Room	The Grid	H6	Rare
Shopping DRC Locker	NuriGO Mall	H5	Ultra
Bank Branch Vault Access	Unknown	?	Rare
Hazard Storehouse	Haneul Nuclear Reactor	I4/I5	?
Old Barber Shop	Songdo Wharf	I7	?
Hoesik Supply Room	Imjin Farmland	D7/D8	?
Supreme Leader Access Card	Chang-san Air Base	B6	Legendary
Gun Store Weapons Locker Key	Unknown	?	?
Black Market Weapons Locker Key	Unknown	?	?
Black Keycard	Unknown	?	?
Supreme Leader's Bunker Access Card	Unknown	?	?
Jang-ui's Converted Power Room	Unknown	?	?
Lucera Suite 703 Bedroom	Unknown	?	?
Gangbyeon Apartment B	Hajin River Heights	G7	?
Airbase Armory Keycard - Single Use	Chang-san Air Base	B5	?
Hanex Guard Station	The Grid	G6	?
Utility Maintenance Storage	Haneul Nuclear Reactor	?	?

How keys work in MW4 DMZ

Keys in Call of Duty: Modern Warfare 4 DMZ are loot items that unlock a specific locked room somewhere on Hajin. Each key's in-game description names the room and gives a Tac-Map grid square (letters west to east, numbers north to south), but not the exact door, which is why a DMZ key locations list saves a lot of searching. Opening a key room is worth XP, and the rooms often hold weapon cases, recipes, valuables and rare components.

Where to find DMZ keys on Hajin

Keys turn up in normal loot containers, as Story Mission and Operation rewards, and from bosses: Activision's Hajin guide says Lieutenants can drop the key to their own personal loot room. Keys are kept if you exfil with them, so a good habit is to check this list, plan the room on your next deployment and pick an exfil close to it.

Best loot keys in DMZ right now

Higher rarity rooms tend to hold the best rewards. The highest-rarity Hajin keys reported so far:

Reactor DRC Locker – Ultra, Haneul Nuclear Reactor (grid H4)
Air Base DRC Weapons Locker – Ultra, Chang-san Air Base (grid B6)
Shopping DRC Locker – Ultra, NuriGO Mall (grid H5)
The Doctor’s Command Office – Legendary, Mirae General Hospital (grid F5)
Roze’s Highrise Armory – Legendary, The Grid (grid G6)
The Chemist’s Secure Armory – Legendary, Haneul Nuclear Reactor (grid I4)
Iskra’s Control Room – Legendary, Cheonwang Peak Array (grid F7)
Supreme Leader Access Card – Legendary, Chang-san Air Base (grid B6)

DMZ exfil guide

Hajin has 23 reported exfil sites. Only some are active each deployment and they are marked with green smoke; call the helicopter, then hold the landing zone because exfils are ambush hotspots. See all DMZ exfil locations on Hajin, or use the nearest-exfil button on every key in the interactive map.

DMZ keys by area (Hajin map)

14th Political Prison – 1 keys
Chang-san Air Base – 5 keys
Deadtown – 3 keys
Imjin Farmland – 3 keys
Cheongun Village – 4 keys
Haneul Nuclear Reactor – 5 keys
Mirae General Hospital – 2 keys
NuriGo Mall – 3 keys
Cheonwang Peak Array – 1 keys
The Grid – 5 keys
Songdo Wharf – 1 keys
Wolves Stadium – 1 keys
Hajin River Heights – 2 keys

14th Political Prison DMZ keys

🔑 The Citadel South Wing

UncommonGRID ?APPROX. position

AREA: 14th Political Prison, Hajin
DOOR / LOCATION: South wing of the Citadel fortress inside the prison.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Chang-san Air Base DMZ keys

🔑 Field Depot

?GRID ?APPROX. position

AREA: Chang-san Air Base, Hajin
DOOR / LOCATION: Corrugated-metal hangar building; white door with red panel. Prompt: “FIELD DEPOT”.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Commandant Office

?GRID ?Building-level

AREA: Chang-san Air Base, Hajin
DOOR / LOCATION: Admin Complex No. 2, off the hallway with red curtains and flags.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Air Base DRC Weapons Locker

UltraGRID B6APPROX. position

AREA: Chang-san Air Base, Hajin
DOOR / LOCATION: Secure armory deep in the air base bunker (south hillside).
INSIDE (LOOT): DRC weapons locker.
HOW TO GET THE KEY: Not reported.

🔑 Supreme Leader Access Card

LegendaryGRID B6ConfirmedAPPROX. position

AREA: Chang-san Air Base, Hajin
DOOR / LOCATION: Supreme Leader’s Bunker deep inside the Chang-san Air Base underground bunker (card lists B6). Exact door not published – APPROX.
INSIDE (LOOT): —
HOW TO GET THE KEY: Operation Iron Citadel reward.

🔑 Airbase Armory Keycard - Single Use

?GRID B5APPROX. position

AREA: Chang-san Air Base, Hajin
DOOR / LOCATION: The Chang-san Airbase Armory. The card works only once.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Cheongun Village DMZ keys

🔑 Counting Room Vault

EpicGRID F4ConfirmedBuilding-level

AREA: Cheongun Village, Hajin
DOOR / LOCATION: Main floor of Heavenly Luck Casino, staff area behind the gaming floor. Dark wooden door with keypad + fingerprint reader. Prompt: “HEAVENLY LUCK CASINO COUNTING ROOM”.
INSIDE (LOOT): Weapons locker (can hold Zip Gun recipe), vault with safe-deposit boxes, caches and a safe: Nuclear Program Files, Encrypted Archive, Gold Skull.
HOW TO GET THE KEY: Operation Silent Ledger reward; also field loot (Industrial Locker at the Rice Mill, Imjin Farmland).

🔑 Vault Armory

EpicGRID F4APPROX. position

AREA: Cheongun Village, Hajin
DOOR / LOCATION: Small armory in the Heavenly Luck Casino underground parking.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Train Depot Storageroom

RareGRID E5APPROX. position

AREA: Cheongun Village, Hajin
DOOR / LOCATION: Basement storeroom of the train station near the fire station.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.
NOTE: Marker placed by the fire station; check the station nearby.

🔑 Mechanic’s Shack

RareGRID F5APPROX. position

AREA: Cheongun Village, Hajin
DOOR / LOCATION: Small standalone hut south of the Cheongun clinic, single door. Prompt: “MECHANIC’S SHACK”.
INSIDE (LOOT): Footlockers, rifle case, armor box, tool chest, military lockers, bags. KG-7 Vulcan and Power Regulator can drop.
HOW TO GET THE KEY: Not stated.

Cheonwang Peak Array DMZ keys

🔑 Iskra’s Control Room

LegendaryGRID F7APPROX. position

AREA: Cheonwang Peak Array, Hajin
DOOR / LOCATION: Control room upstairs in the broadcast building.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Likely Lieutenant Iskra drop (not confirmed).

Deadtown DMZ keys

🔑 Re-Education Center Annex

EpicGRID B7ConfirmedBuilding-level

AREA: Deadtown, Hajin
DOOR / LOCATION: Ground floor of the Re-Education Center main building; wooden door near “NO PUBLIC ACCESS”.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Underground Propaganda Store Room

?GRID ?APPROX. position

AREA: Deadtown, Hajin
DOOR / LOCATION: Re-Education Center underground, off a dark corridor.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Haksan School Armory

RareGRID B7APPROX. position

AREA: Deadtown, Hajin
DOOR / LOCATION: Makeshift armory on the 2nd floor of the school northeast of the Re-Education Center.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Hajin River Heights DMZ keys

🔑 Militia Arms Depot

RareGRID G7APPROX. position

AREA: Hajin River Heights, Hajin
DOOR / LOCATION: Armory on the lower floor of Gangbyeon Apartment B building of the compound in Hajin River Heights.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Can appear in a duffel bag in The Citadel East Wing (Political Prison).

🔑 Gangbyeon Apartment B

?GRID G7APPROX. position

AREA: Hajin River Heights, Hajin
DOOR / LOCATION: Gangbyeon Apartment B in Compound Echo, Hajin River Heights (single player report, check the grid on your key).
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Haneul Nuclear Reactor DMZ keys

🔑 Reactor 02 Control Room

RareGRID I4APPROX. position

AREA: Haneul Nuclear Reactor, Hajin
DOOR / LOCATION: Control room inside the Reactor 02 building.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Reactor DRC Locker

UltraGRID H4ConfirmedAPPROX. position

AREA: Haneul Nuclear Reactor, Hajin
DOOR / LOCATION: DRC Weapons Locker inside Reactor 02’s irradiated pool. Bring radiation gear + gas mask.
INSIDE (LOOT): DRC weapons locker.
HOW TO GET THE KEY: Operation Fallen Ember reward.

🔑 The Chemist’s Secure Armory

LegendaryGRID I4APPROX. position

AREA: Haneul Nuclear Reactor, Hajin
DOOR / LOCATION: Secured bunker near the reactor boat house.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Likely Lieutenant drop (not confirmed).

🔑 Hazard Storehouse

?GRID I4/I5APPROX. position

AREA: Haneul Nuclear Reactor, Hajin
DOOR / LOCATION: White corrugated storage shed marked “창고 STORAGE” on the south shore of the reactor island, light-blue door with blue barrels beside it. Prompt: “HAZARD STOREHOUSE – LOCKED”.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Utility Maintenance Storage

?GRID ?APPROX. position

AREA: Haneul Nuclear Reactor, Hajin
DOOR / LOCATION: A maintenance storeroom at the reactor.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Imjin Farmland DMZ keys

🔑 Rice Mill Bunker

?GRID D7/D8Building-level

AREA: Imjin Farmland, Hajin
DOOR / LOCATION: At the Rice Mill: green metal door with a circular knob. HUD shows “Imjin Farmland”.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Imjin Mill Foreman’s Office

RareGRID D8ConfirmedBuilding-level

AREA: Imjin Farmland, Hajin
DOOR / LOCATION: Foreman’s office on the first floor of the Rice Mill. Prompt: “IMJIN MILL FOREMAN’S OFFICE”.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Hoesik Supply Room

?GRID D7/D8APPROX. position

AREA: Imjin Farmland, Hajin
DOOR / LOCATION: A supply room at the Rice Mill.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.
NOTE: Pin is APPROX – somewhere in the Rice Mill, near the Rice Mill Bunker and Foreman’s Office.

Mirae General Hospital DMZ keys

🔑 Mirae Electrical Room

RareGRID F5ConfirmedBuilding-level

AREA: Mirae General Hospital, Hajin
DOOR / LOCATION: Northwestern basement parking garage, level B2. Grey double door in the purple-walled section under “Danger”.
INSIDE (LOOT): Tool chest, footlocker, bags: Electronic Sensors, Encrypted Archive, Armor Plates, Electronics.
HOW TO GET THE KEY: Operation Critical Extraction reward.

🔑 The Doctor’s Command Office

LegendaryGRID F5ConfirmedBuilding-level

AREA: Mirae General Hospital, Hajin
DOOR / LOCATION: Hospital office area (upper floor, via stairwell). Pale wooden door / converted conference room.
INSIDE (LOOT): LT crate with the Tempered Armor Vest recipe.
HOW TO GET THE KEY: Dropped by The Doctor (Lieutenant at Mirae).

NuriGO Mall DMZ keys

🔑 Coin Mining Den

RareGRID G6ConfirmedAPPROX. position

AREA: NuriGO Mall, Hajin
DOOR / LOCATION: NuriGO West, multi-storey building with red-railed stairwell, landing marked “3”. Grey door under “사무실 OFFICE” sign.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Operation Shopping Hacks reward.

🔑 Warden’s Loot Room (name unknown)

?GRID ?ConfirmedAPPROX. position

AREA: NuriGO Mall, Hajin
DOOR / LOCATION: A sealed door beneath NuriGO Mall, in the underground shopping district (official story).
INSIDE (LOOT): High-value Plate Carrier recipe, rare components, a weapon manual.
HOW TO GET THE KEY: Dropped by Lieutenant Warden.
NOTE: From Activision’s field report; the exact door isn’t shown.

🔑 Shopping DRC Locker

UltraGRID H5APPROX. position

AREA: NuriGO Mall, Hajin
DOOR / LOCATION: DRC Locker in the DRC Labs beneath NuriGO Mall, inside the secured lower parking garage. Marker APPROX (mall footprint).
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.
NOTE: No room footage yet.

Police Stations DMZ keys

🔑 Police Station Armory

—GRID variesConfirmedBuilding-level

AREA: Police Stations, Hajin
DOOR / LOCATION: Basement corridor by the holding cells, beside the caged armory window. Prompt: “POLICE STATION ARMORY” (300 XP Stronghold Unlocked). Reported to work at all 5 police stations.
INSIDE (LOOT): Basic Weapons Locker, military bag; good for Weapon Manuals.
HOW TO GET THE KEY: Police Station Key comes in the Recon Equipment Kit (DMZ lvl 19).
NOTE: Doors confirmed at Pyonghwa and Revolution Dam; the other 3 are expected to match.

Songdo Wharf DMZ keys

🔑 Old Barber Shop

?GRID I7APPROX. position

AREA: Songdo Wharf, Hajin
DOOR / LOCATION: The barber shop next to the crab shack on the south side of Songdo Wharf.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.
NOTE: Pin is APPROX – south side of Songdo Wharf; look for the crab shack.

The Grid DMZ keys

🔑 Executive Arms Auction

EpicGRID G6ConfirmedBuilding-level

AREA: The Grid, Hajin
DOOR / LOCATION: DBN Headquarters, arms-auction room at the top; dark teal door on a carpeted office floor.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Netshin IT Room

?GRID G6ConfirmedAPPROX. position

AREA: The Grid, Hajin
DOOR / LOCATION: High-security server room on the upper floors of the Netshin (Nenshin) Tech Complex.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Found in an apartment locker.
NOTE: Netshin isn’t its own icon on the official map; marker is near The Grid label.

🔑 Roze’s Highrise Armory

LegendaryGRID G6ConfirmedAPPROX. position

AREA: The Grid, Hajin
DOOR / LOCATION: Armory in the Netshin high-rise; exact door not reported yet.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Operation Grid Assault reward.

🔑 Gas Station Electrical Room

RareGRID H6APPROX. position

AREA: The Grid, Hajin
DOOR / LOCATION: Inside the Construction Zone gas station (east side of The Grid): grey metal door beside a noticeboard. Marker is APPROX – Construction Zone area, not the door.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.
NOTE: Position approximate.

🔑 Hanex Guard Station

?GRID G6APPROX. position

AREA: The Grid, Hajin
DOOR / LOCATION: The guard station on an upper floor near the Hanex Bank vault.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Unknown DMZ keys

🔑 Bank Branch Vault Access

RareGRID ?APPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: Currency storage rooms in South Korean bank branches.
INSIDE (LOOT): —
HOW TO GET THE KEY: —

🔑 Gun Store Weapons Locker Key

?GRID ?ConfirmedAPPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: A gun store weapons locker (which one not stated).
INSIDE (LOOT): —
HOW TO GET THE KEY: Explosives Equipment Kit (lvl 16), Trap Equipment Kit (lvl 42).

🔑 Black Market Weapons Locker Key

?GRID ?ConfirmedAPPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: A black market weapons locker (where not stated).
INSIDE (LOOT): —
HOW TO GET THE KEY: Recon Equipment Kit (lvl 46).

🔑 Black Keycard

?GRID ?APPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: Door not found yet.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.
NOTE: No door or grid published yet.

🔑 Supreme Leader's Bunker Access Card

?GRID ?APPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: Door not described yet. Check the grid on your key.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Jang-ui's Converted Power Room

?GRID ?APPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: Door not described yet. Check the grid on your key.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

🔑 Lucera Suite 703 Bedroom

?GRID ?APPROX. position

AREA: Unknown, Hajin
DOOR / LOCATION: Door not described yet. Check the grid on your key.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not reported.

Wolves Stadium DMZ keys

🔑 Shop Records Room

RareGRID F7ConfirmedAPPROX. position

AREA: Wolves Stadium, Hajin
DOOR / LOCATION: Shop building (grey glass double doors in red-brick wall), above the Goh24 supermarket south of the clinic. Frosted-glass door next to an apartment-sale poster.
INSIDE (LOOT): Not reported yet.
HOW TO GET THE KEY: Not stated.

MW4 DMZ keys FAQ

Where are the DMZ keys on Hajin?

Every known MW4 DMZ key door on Hajin is listed on M4DMZKeys.vercel.app with its grid square, area and door description. Each key's in-game description also gives a Tac-Map grid square for its door.

How do I find a key's door from its grid?

Inspect the key in your backpack to read its grid (for example F4). Letters run west to east and numbers north to south on the Tac-Map. Go to that square and look for the described door.

How many keys are there in MW4 DMZ?

M4DMZKeys.vercel.app currently tracks 44 Hajin keys, including 16 confirmed. New keys are added every hour as they are reported.

Do Lieutenants drop keys?

Yes. Activision's Hajin guide says Lieutenants can drop the key to their own personal loot room.

Is the interactive map free?

Yes. The key list is public; the interactive map with pins, exfils, nearest-exfil routes and a looted checklist needs a free account.

What is the best DMZ key in MW4?

Based on reported rarity, the top Hajin keys include Reactor DRC Locker, Air Base DRC Weapons Locker, Shopping DRC Locker. Rarity is a good guide, but contents vary per deployment.

Where are the exfil locations in DMZ Hajin?

23 exfil sites have been reported across Hajin. Active ones show green smoke. A full list with grid squares is on the M4DMZKeys.vercel.app exfils page.

Do you keep DMZ keys after you exfil?

Generally yes: in DMZ, what you carry out on a successful exfil (including keys) stays in your inventory for later deployments, and what you carry when you die is lost.