De Graff is located in Logan County, OH. The population is 1,298, making De Graff the 3rd largest city in Logan County.
There are 2 public schools in De Graff with an average Homefacts rating of C+. The total crime rate for De Graff is very low , and there are 9 registered sex offenders residing in the city. Unemployment in De Graff is moderate and the median home sales price is $0. Detailed and up-to-date De Graff property reports are available for any property address.
Cities near De Graff include Miami Township, Pleasant Township and Quincy.