- Pacific County, named after the Pacific Ocean, is perched at the southwestern corner of Washington state. The ocean forms its western border and the north shore of the Columbia River and Wahkiakum County form its southern border. Grays Harbor County lies to the north and Lewis County to the east. A distinctive geographical feature is the 30-mile-long Long Beach Peninsula, which meets the ocean on its western side and shelters Willapa Bay on its eastern side…