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is a city in mountainous Madison County, Arkansas, United States. The population was 1,931 at the 2000 census. The city is the county seat of Madison County. During the American Civil War it was the site of what became known as the Huntsville Massacre.
Huntsville is part of the Fayetteville–Springdale–Rogers, AR-MO Metropolitan Statistical Area.
According to the United States Census Bureau, the city has a total area of 3.0 square miles (7.8 km²), all of it land.