Minbari society is segregated into a caste system. The three castes are the Worker Caste, Warrior Caste and Religious Caste. Each Minbari is born into a particular caste but may join another if they feel strongly that their calling in life lies there. The castes are divided into clans which have their own leaders and family houses, or "Fanes".

Since the time of Valen, the three castes lived in peace with one another, though at times there has been friction, particularly between the religious and warrior castes. The workers, although given equal representation in the government, were often caught in between these rivalries and forgotten until Delenn reorganized the Grey Council in favor of them.

Minbari didn't produce and consume news and information in broad terms. Rather, they understood and were told what they needed to know from those higher up in society or from one another. Partly, this was due to respecting the privacy of the affected individuals.

Minbari religious beliefs hold that the universe is both alive and conscious and that it manifests in all forms of sentient life, giving all individuals a piece of itself. Thus, each generation of Minbari are reborn into the next. While Minbari generally do not worship individual gods, they do have a representation of a higher being, known as Valeria. Valen founded the Grey Council and is also thought of as divine by the Minbari.

True Seekers are held in very high regard by the Religious Caste.

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