Sulphur Rock, AR is a city located in Independence County, Arkansas and has a land area of 43.89 square miles (113.67 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Sulphur Rock, Arkansas and it is 72579. The area code(s) for Sulphur Rock is 870.
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