Tinley Park Homes for Sale offer living in the fastest growing Chicago suburb! Tinley Park is a village located in Cook County, Illinois, United States, with a small portion in Will County and it is one of the fastest growing suburbs south of Chicago. According to the 2010 census estimates total population of Tinley Park is 56,703. Tinley Park has total area 16.04 square miles of which 16.02 square miles is land and 0.02 square miles is water. Tinley Park is well diversified by demographically White, African American, Native American, Asian, Pacific Islander, Hispanic or Latino and other races people. As of the 2010 estimate the income for the village is $61,648 and the median income for a family was $71,858. The per capita income for the village is $25,207 where 2.5% of the populations are below the poverty line.