Saint John, WA

ZIP code 99171 belongs to Rosalia, a small town in eastern Washington with a population of around 550 residents. The town is known for its historic downtown area, which features the Rosalia Historical Museum and the Rosalia Pioneer Church. Other notable landmarks in the area include the Rosalia City Park and the Rosalia Library. With its charming small-town atmosphere and picturesque surroundings, Rosalia is a hidden gem in the Palouse region.