Where to Farm Iron Lockbox

The best place to farm Iron Lockbox is Thousand Needles, where Swirling Vortex (level 33-34) drops it at 1.5%. That is the vanilla 1.12 chance, not yet confirmed in Forever. 284 sources are ranked below by drop chance.

Best zones:

The 15 zones with the best source; every source is listed below.

Zone	Sources	Best source	Level	Drop%
Thousand Needles	19	Swirling Vortex	33-34	1.5%
Desolace	60	Prince Kellen	33	1.3%
Ashenvale	7	Wandering Protector	35+	1.2%
Gnomeregan	6	Arcane Nullifier X-21	32-33+	1.1%
Alterac Mountains	26	Nancy Vishas	33+	0.8%
Duskwood	11	Nefaru	34	0.8%
Unknown zone	8	Kolkar Waylayer	33-34	0.8%
Hillsbrad Foothills	11	Captain Ironhill	32+	0.6%
Scarlet Monastery	14	Scarlet Tracking Hound	33-34+	0.6%
The Barrens	6	Razorfen Thornweaver	33-34+	0.5%
Razorfen Downs	4	Withered Spearhide	34-35+	0.5%
Stranglethorn Vale	42	Saltscale Forager	35-36+	0.4%
Stormwind City	1	Lord Gregor Lescovar	31	0.4%
Razorfen Kraul	6	Greater Kraul Bat	32+	0.4%
Arathi Highlands	32	Fardel Dabyrie	33	0.4%

All sources, by drop chance:

Vanilla reference — from the 1.12 world data, not yet confirmed in Forever.

Source	Level	Zone	Spawns	Side	How	Drop%	Map
Swirling Vortex	33-34	Thousand Needles	6		Drop	1.5%	map
Vile Sting(rare)	35+	Thousand Needles	1		Drop	1.4%	map
Prince Kellen(rare)	33	Desolace	1		Drop	1.3%	map
Wandering Protector(elite)	35+	Ashenvale	1	Horde only	Drop	1.2%	map
Whirlwind Ripper	32-34	Desolace	13		Drop	1.1%	map
Arcane Nullifier X-21(elite)	32-33+	Gnomeregan	8		Drop	1.1%	map
Whirlwind Stormwalker	35-37	Desolace	15		Drop	1.0%	map
Nancy Vishas(elite)	33+	Alterac Mountains	1		Drop	0.8%	map
Nefaru(rare)	34	Duskwood	2		Drop	0.8%	map
Giggler(rare)	34	Desolace	1		Drop	0.8%	map
Uthil Mooncall	32	Ashenvale	1		Drop	0.8%	map
Kolkar Waylayer	33-34		0		Drop	0.8%	map
Stitches(elite)	35+		0		Drop	0.7%	map
Morbent Fel(elite)	32+	Duskwood	1		Drop	0.6%	map
Heartrazor(rare)	32+	Thousand Needles	1		Drop	0.6%	map
Captain Ironhill(elite)	32+	Hillsbrad Foothills	3	Horde only	Drop	0.6%	map
Scarlet Tracking Hound(elite)	33-34+	Scarlet Monastery	7		Drop	0.6%	map
Razorfen Thornweaver(elite)	33-34+	The Barrens	25		Drop	0.5%	map
Tomb Fiend	35		0		Drop	0.5%	map
Withered Spearhide(elite)	34-35+	Razorfen Downs	9		Drop	0.5%	map
Eliza(elite)	31+		0		Drop	0.5%	map
Withered Warrior(elite)	34-35+	The Barrens	13		Drop	0.5%	map
Prince Raze(rare)	32	Ashenvale	1		Drop	0.5%	map
Saltscale Forager(elite)	35-36+	Stranglethorn Vale	2		Drop	0.4%	map
Lord Gregor Lescovar	31	Stormwind City	1	Horde only	Drop	0.4%	map
Achellios the Banished(rare)	31	Thousand Needles	1		Drop	0.4%	map
Razorfen Battleguard(elite)	33-34+	The Barrens	49		Drop	0.4%	map
Whirlwind Shredder	32-34	Desolace	13		Drop	0.4%	map
Writhing Mage(elite)	58-59+	Hillsbrad Foothills	7		Drop	0.4%	map
Greater Kraul Bat(elite)	32+	Razorfen Kraul	7		Drop	0.4%	map
Mistvale Gorilla	32-33	Stranglethorn Vale	11		Drop	0.4%	map
Scarlet Gallant(elite)	33-34+	Scarlet Monastery	20		Drop	0.4%	map
Mechano-Frostwalker(elite)	31-32+	Gnomeregan	8		Drop	0.4%	map
Condemned Monk(elite)	58-59+	Hillsbrad Foothills	4		Drop	0.4%	map
Scarlet Diviner(elite)	34-35+	Scarlet Monastery	16		Drop	0.4%	map
Fardel Dabyrie	33	Arathi Highlands	1	Horde only	Drop	0.4%	map
Taneel Darkwood	32	Ashenvale	1		Drop	0.4%	map
Scarlet Adept(elite)	33-34+	Scarlet Monastery	5		Drop	0.3%	map
Saltscale Warrior(elite)	35-36+	Stranglethorn Vale	5		Drop	0.3%	map
Razorfen Beastmaster(elite)	30-31+	Razorfen Kraul	3		Drop	0.3%	map
Raging Thunder Lizard	33-34	Desolace	77		Drop	0.3%	map
Scarlet Beastmaster(elite)	34-35+	Scarlet Monastery	4		Drop	0.3%	map
Geltharis	32	Ashenvale	1		Drop	0.3%	map
Anguished Dead(elite)	31-33+	Scarlet Monastery	13		Drop	0.3%	map
Mechanized Guardian(elite)	31-32+	Gnomeregan	16		Drop	0.3%	map
Kraul Bat(elite)	30-31+	Razorfen Kraul	13		Drop	0.3%	map
Haunting Phantasm(elite)	32-33+	Scarlet Monastery	8		Drop	0.3%	map
Death's Head Cultist(elite)	33-34+	The Barrens	15		Drop	0.3%	map
Scarlet Chaplain(elite)	34-36+	Scarlet Monastery	13		Drop	0.3%	map
Dark Iron Agent(elite)	32-33+	Gnomeregan	34		Drop	0.3%	map
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Drop% is the rate recorded in Forever once a source has been looted ten times; a greyed figure is the vanilla 1.12 chance from the world data (vanilla reference — from the 1.12 world data, not yet confirmed in forever). Spawns counts the source's spawn points in the world data. "Side" names which side can kill the NPC when the other finds it friendly. The lead picks the best chance among sources that are not a rare spawn and have at least three spawn points.