World Christian Database - Largest Christian Denominations in the USA
How many kinds of Christians (denominations) are there?
A Christian denomination is a distinct religious body within Christianity, identified by traits such as a name, organisation, leadership and doctrine. Individual bodies, however, may use alternative terms to describe themselves, such as church or sometimes fellowship. Divisions between one group and another are defined by authority and doctrine; issues such as the nature of Jesus, the authority of apostolic succession, eschatology, and papal primacy may separate one denomination from another. Groups of denominations—often sharing broadly similar beliefs, practices, and historical ties—are sometimes known as "branches of Christianity".