North Lima is an unincorporated community in central Beaver Township, Mahoning County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 44452. It lies at the intersection of State Routes 7 and 164.The community is part of the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area.North Lima was laid out around 1826. The name may be a transfer from Lima, New York. A post office called North Lima has been in operation since 1832.