Greenford is an unincorporated community in central Green Township, Mahoning County, Ohio, United States. The community It lies along State Route 165 a short distance north of Salem. It is part of the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area. Although it is unincorporated, Greenford has a post office, with the ZIP code of 44422.
A post office called Greenford has been in operation since 1829. The community takes its name from Green Township.
Greenford has a public library, a branch of the Public Library of Youngstown and Mahoning County.