Lockwood City did not possess just a single territory, but instead, there was a total of three territories that were present in the entire city. As for small survivors camps, they did not exist at all.
In case there was a small settlement that had been created by the humans, the zombies would go ahead and attack that place, completely destroying them.
Due to this, there was nobody that tried to create a territory of their own. After all, currently, the strength of the zombies had already increased drastically, with the majority of them being in the Bronze rank.
As for humans, if they wanted to create a territory of their own from scratch, they needed a lot of manpower, and each of them had to be strong enough to be able to resist the zombies if they attacked.
