Royal City, WA

ZIP code 99357 is located in Walla Walla County, Washington. The area is home to the renowned L'Ecole No. 41 winery, known for its award-winning wines and picturesque vineyards. Additionally, the Whitman Mission National Historic Site can be found in this ZIP code, offering a glimpse into the region's history and significance as the site of a tragic event during the Oregon Trail era.