When first created the township had only 350 residents . The creation of the Union Stock Yards in 1865 changed the evolutionary path of Hyde Park and the neighboring Lake Township , which became the industrial center while Hyde Park became the middle class enclave . The population of the township grew from 3,600 in 1870 to 15,700 ten years later . The Great Chicago Fire saw the population swell . By 1889 the population had reached 85,000
Great Chicago Fire
Great Chicago Fire
Hyde Park Township, Cook County, Illinois