South Gull Lake is an unincorporated community in Ross Township, Kalamazoo County in the U.S. state of Michigan. It is a Census-designated place (CDP) used for statistical purposes and does not have any legal status as an incorporated municipality. The population was 1,526 at the 2000 census.The CDP includes an area around the southern and eastern shores of Gull Lake. The lake extends into Richland Township to the west and the northern tip crosses into Barry County. Although the entire area surrounding the lake is developed, in the 2000 Census the CDP is limited to Ross Township. The CDP includes the communities known locally as Yorkville at, Gull Lake at, and Midland Park at. A summer post office named Yorkville operated from 1917-1939.GeographyAccording to the United States Census Bureau, the CDP has a total area of 3.1 square miles (8.1 km²), of which 1.3 square miles (3.4 km²) is land and 1.8 square miles (4.7 km²) (57.83%) is water.DemographicsAs of the census of 2000, there were 1,526 people, 643 households, and 459 families residing in the CDP. The population density was 1,161.2 per square mile (449.8/km²). There were 885 housing units at an average density of 673.4 per square mile (260.8/km²). The racial makeup of the CDP was 99.48% White, 0.13% Native American, 0.07% Asian, and 0.33% from two or more races. Hispanic or Latino of any race were 1.05% of the population.