State of Decay 3 · Facts
Largest SoD map
They said largest, not a km
Short answer
Xbox Wire 26 Aug 2026, Kevin Patzelt: 'this is our largest map ever' plus untethered multiplayer. No square kilometres on this page.
Also: biggest map · map size sod
What we know
Largest-in-the-series is the confirmed phrase. A number would be invented. Untethered co-op still has its own page.
What to do
Wait for a named size if they publish one. Don't port Chernarus 230 km² onto SoD.
Don't
Don't paste a fake km². Don't use DayZ map stills as SoD.