- Polacca is a small town in Navajo County, Arizona, United States. It is located on the Hopi Indian Reservation and serves as the seat of the Hopi Tribal government. Polacca is home to a population of around 1,358 residents, according to the 2010 Census. The town is known for its rich Native American culture and traditional Hopi crafts, such as pottery and jewelry. Visitors to Polacca can explore the nearby Hopi cultural center, historic sites, and participate in traditional ceremonies and events.