The North Carolina Zoological Park is located in Asheboro in Randolph County, North Carolina in the Uwharrie Mountains near the geographic center of the state, approximately 75 miles (121 km) west of Raleigh, NC, United States. At over 2,000 acres (810 ha), it is the largest walk-through zoo in the world, and one of only two state-owned zoos in the United States. The NC Zoo has over 1600 animals from more than 250 species primarily representing Africa and North America. The zoo is open 364 days a year and receives more than 700,000 visitors annually.