Middleburg is an unincorporated community in northern Zane Township, Logan County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 43336. It is located at the intersection of State Route 287 with County Road 153, near the headwaters of the Big Darby Creek and a short distance southwest of U.S. Route 33.
- ^ Zip Code Lookup
- ^ DeLorme. Ohio Atlas & Gazetteer. 7th ed. Yarmouth: DeLorme, 2004, pp. 56-57. ISBN 0-89933-281-1.