Burley is a city in Cassia County, with a small portion extending north across the Snake River into neighboring Minidoka County, in the southern portion of the U.S. state of Idaho. The population was 9,316 at the 2000 census. The city is the county seat of Cassia County. Burley apartments for rent comparison page shows most up to date rent information on Burley apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.