The City of Aurora is the third most populous city in the State of Colorado and the 59th most populous city in the United States. The municipality is split between Arapahoe County and Adams County, with a small portion lying in Douglas County. The city and its western neighbor are the principal cities of the Denver-Aurora Metropolitan Statistical Area. The United States Census Bureau estimates the population of the city was 297,235 in 2005, a.54% increase since 2000. In 2005, the estimated population of the Denver-Aurora Metropolitan Statistical Area was 2,359,994, the estimated population of the Denver-Aurora-Boulder Combined Statistical Area was 2,869,377, and the estimated population of the Front Range Urban Corridor was 4,013,055. Aurora apartments for rent comparison page shows most up to date rent information on Aurora apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.