So I got a fantasy setting that left the Medieval era and entered the Renaissance with strong states that can maintain both order and infrastructure across their territories. While there are 'wild areas' where the rule of law is relatively weak, you can bet, if someone tries to set themselves up as a bandit king and tries to control an area, soldiers are going to come knocking at their door within months at the latest.
Now I want to put goblins into this setting in realistic places. To define goblins: in the case we are talking about creatures approximately the size of a five year old with very good night vision, relative quick reflexes and poor strength. They breed and grow rapidly, with a goblin being an adult at one year in age and female goblins birthing somewhere between four to ten children at a time after a six months long pregnancy. Culturally they are fairly primitive and tend to struggle with higher technology. They are more likely to steal and scavenge than build or create, although they tend to have a good grasp of teamwork and ambush tactics due to a strong family based culture.
Narratively I'm planning to use them for horror, and I'm fine making a few tweaks, as long as they are still very much flesh and blood creatures. So what kind of places could they turn up in?