Star is a city in northwestern Ada County, Idaho, United States. The population was 1,795 at the 2000 census.It was named in the 1800's by travelers on their way to Middleton and Boise who used the star on the school house to find east and west. The name stuck and it became Star, Idaho. Today it is a growing town west of Boise and its schools are shared with Middleton School District and Eagle School District. Star apartments for rent comparison page shows most up to date rent information on Star apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.