Keywords: OH-638.jpg 40 28 21 6 N 83 44 6 W Along northbound w Ohio State Route 638 State Route 638 at Northwood Logan County Ohio Northwood an unincorporated area unincorporated community on the border between McArthur Township Logan County Ohio McArthur and Richland Township Logan County Ohio Richland townships in northern Logan County Ohio Logan County Ohio United States Own 2007-01-03 User Nyttend Nyttend No<nowiki></nowiki>ne McArthur Township Logan County Ohio Ohio State Route 638 Richland Township Logan County Ohio Highway pictures by User Nyttend |