Greenleaf is an unincorporated census-designated place in Brown County, Wisconsin, United States, in the town of Wrightstown. As of the 2010 census it had a population of 607.It is located at the intersection of Wisconsin Highways 57/32 and 96. It uses ZIP code 54126. Greenleaf has an area of 1.042 square miles, all of it land. The community is part of the Green Bay Metropolitan Statistical Area.