Irwin is an unincorporated community in southwestern Union Township, Union County, Ohio, United States. It is located at 40°07′21″N 83°29′22″W / 40.12250°N 83.48944°W / 40.12250; -83.48944Coordinates: 40°07′21″N 83°29′22″W / 40.12250°N 83.48944°W / 40.12250; -83.48944, at the intersection of Ohio State Route 4 and 161. Although it is unincorporated, Irwin has a post office which serves the surrounding area, including the community of Rosedale.
Rosedale Bible College
At least 2 but less than 4 years; Private not for profit; $8,400 average out-state tuition; $8,400 average in-state tuition