It currently has four members: the Arizona Cardinals, the Los Angeles Rams, the San Francisco 49ers, and the Seattle Seahawks.
The NFL Coastal Division had four members: Atlanta Falcons, Baltimore Colts, Los Angeles Rams, and San Francisco 49ers.
Los Angeles and San Francisco occupied the West Coast, while Baltimore maintained its dominance over the lesser teams that remained in the division.
In 1976, the newly formed Seattle Seahawks spent one season in this division (Seattle did not play the other four members of the division home-and-home in 1976, playing each of the other 13 NFC teams and the other expansion team of 1976, the Tampa Bay Buccaneers) before moving to the AFC West.
The Rams remained in the West, preserving the historical rivalry with the 49ers that has existed since 1950, and thus had been the only team in the division that was located east of the Rocky Mountains until 2015.
The 2016 season marked the first time neither the 49ers nor Seahawks played a division game east of the Rocky Mountains.
All of its teams have appeared in a Super Bowl at least once since the 2002 realignment (the only other division accomplishing this being the NFC South): Arizona (2008), Los Angeles Rams (2018, 2021), San Francisco (2012, 2019, 2023), and Seattle (2005, 2013, 2014).