Hanna, UT is a city located in Duchesne County, Utah and has a land area of 594.92 square miles (1,540.84 km2). The water area for the city is 5.69 square miles or 14.74 km2. There is one unique zip code in Hanna, Utah and it is 84031. The area code(s) for Hanna is 435.
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