It is estimated that there are around 4,500 species of cockroaches worldwide, with billions—possibly even trillions—of individual cockroaches existing at any given time.

Here are some key facts about cockroach populations:

Only about 30 species are commonly associated with human habitats.

The most common household species include the German cockroach, American cockroach, Oriental cockroach, and Brown-banded cockroach.

Cockroaches are highly adaptable and can be found on almost every continent, including extreme environments like deserts and rainforests.

Because cockroaches reproduce quickly and thrive in various conditions, their global population is vast and constantly growing.