Coulee City, WA is a city located in Grant County, Washington and has a land area of 420.01 square miles (1,087.82 km2). The water area for the city is 28.77 square miles or 74.51 km2. There is one unique zip code in Coulee City, Washington and it is 99115. The area code(s) for Coulee City is 509.
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