Jupiter

There are only space based habitats in the Jovian system, no natural bodies are permanently inhabited

Europa Orbit
There are construction and science stations in orbit around Europa. Several unmanned craft have landed on the surface of Europa to characterize the ice that exists on its surface. Manned missions are soon to follow.

Io Orbit
There are scientific observation stations in orbit around Io.

USJ
With the increasing development of the various natural satellites of Jupiter, there is a growing movement to create a united government in the Jovian system, named the United Systems of Jovia (USJ). This proposed federation is not recognized by any government or corporation.