Pomeroy, WA is a city located in Garfield County, Washington and has a land area of 769.69 square miles (1,993.49 km2). The water area for the city is 12.60 square miles or 32.63 km2. There is one unique zip code in Pomeroy, Washington and it is 99347. The area code(s) for Pomeroy is 509.
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