The Deneva colony is one of the oldest Earth colonies, established prior to the 2150s on Deneva Prime as a freighting line base for mining in the sector's asteroid belt. In 2153, the ECS Horizon was en route to Deneva Station. (ENT: "Horizon")

In the 2260s, the planet had a population of just under a million, with over 100,000 people in the capital city alone.

In 2267, the Deneva Colony was attacked by neural parasites, killing several colonists, including George Samuel Kirk. (TOS: "Operation -- Annihilate!")