Distribution of U.S. oil productionThe U.S. is divided into five regional divisions for oil production, known as Petroleum Administration for Defense District’s (PADD), which were created during World War II. The main goal was to organize the allocation of fuels from petroleum products and for data collection purposes these regions are still currently used.
Out of all PADD's, PADD 3, including the Gulf Coast states, has recorded by far the largest daily crude oil production, at some 7.9 million barrels in 2021. By comparison, PADD 1 (East Coast) production volumes were 74 thousand barrels per day. The importance of PADD 3 to the country’s overall oil output is hardly surprising as Texas is by far the state with the largest crude oil production.