Collinsville is a city in Rogers and Tulsa counties in the U.S. state of Oklahoma, and a part of the Tulsa, Oklahoma Metropolitan Statistical Area. It was named for Dr. A. H. Collins, an engineer and surveyor who first surveyed the land that became this community. The population was 7,881 by the 2020 United States census, a 40.6% increase over the figure of 5,606 according to the 2010 census, which itself was an increase of 37.5 percent over the figure of 4,077 recorded in 2000.