Star, ID has a population of 7,255 and is the 5,048th largest city in the United States. The population density is 1,136 per sq mi which is 5852% higher than the Idaho average and 1154% higher than the national average. The median age in Star is 34 which is approximately 6% lower than the Idaho average of 36. In Star, 65% of the population over 15 years of age are married, 92% speak English and 6% speak Spanish. 53% of Star residents were born in Idaho, 43% were born out of state, 1% were born outside of the United States and 2% were foreign born.