<Tr> <Th> Time zone </Th> <Td> Pacific Standard Time (PST) (UTC − 8: 00) </Td> </Tr> <Tr> <Th> Summer (DST) </Th> <Td> Pacific Daylight Time (PDT) (UTC − 7: 00) </Td> </Tr> <P> The West Coast or Pacific Coast is the coastline along which the contiguous Western United States meets the North Pacific Ocean . As a region, this term most often refers to the coastal states of California, Oregon and Washington . More specifically, it refers to an area defined on the east by the Cascade Range, Sierra Nevada and Mojave Desert, and on the west by the Pacific Ocean . The U.S. Census groups the five states of California, Oregon, Washington, Alaska, and Hawaii together as the Pacific States division . </P> <P> As of the 2010 Census, the estimated population of the Census Bureau's Pacific Region was approximately 47.8 million (56.9 million if Nevada and Arizona are included)--about 15.3% (18.2% with Nevada and Arizona) of US population . The largest city on the west coast of the United States is Los Angeles . </P>

What is the ocean to the west of the u.s.a