Elke Conference is op zijn beurt onderverdeeld in drie Divisions van elk vijf teams: de Atlantic, Central en Southeast Division in de Eastern Conference en de Northwest, Pacific en Southwest Division in de Western Conference. ###>Reflecting the population distribution of the United States and Canada as a whole, most teams are in the eastern half of the country: thirteen teams are in the Eastern Time Zone, nine in the Central, three in the Mountain, and five in the Pacific.