Siletz is a city in Lincoln County, Oregon, United States. The population was 1,133 at the 2000 census. The city is located next to the Siletz Reservation and is the site of the annual Nesika Illahee Pow Wow in August.
According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km²), all of it land.
As of the census of 2000, there were 1,133 people, 420 households, and 315 families residing in the city. The population density was 1,799.3 people per square mile (694.4/km²). There were 468 housing units at an average density of 743.2 per square mile (286.8/km²). The racial makeup of the city was 71.23% White, 0.44% African American, 21.01% Native American, 0.71% Asian, 0.09% Pacific Islander, 0.44% from other races, and 6.09% from two or more races. Hispanic or Latino of any race were 1.85% of the population.