Glendale is a city in an exclave of Arapahoe County, Colorado, United States. As of 2005, the city is estimated to have a total population of 4,771. The entire city is surrounded on all sides by the city and county of Denver. Its fire services have been provided by contract by the City and County of Denver since 2005. Glendale apartments for rent comparison page shows most up to date rent information on Glendale apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.