Ione, WA is a city located in Pend Oreille County, Washington and has a land area of 314.93 square miles (815.67 km2). The water area for the city is 4.45 square miles or 11.53 km2. There is one unique zip code in Ione, Washington and it is 99139. The area code(s) for Ione is 509.
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