Pyrmont is an unincorporated community in northwestern Perry Township, Montgomery County, Ohio, United States. It lies at the intersection of Sulphur Springs and Providence Roads with the Brookville-Pyrmont Pike. Located in the far west of the county, it lies several miles from the city of Dayton; the nearest city is Brookville, 3 miles (5 kilometers) to the northeast. Pyrmont is a part of the Brookville Local School District. Pyrmont was a busy town before interstate 70 was established near Brookville. Pyrmont was on the Stage Coach Wagon route. Then Interstate 70 was formed. 
- DeLorme. Ohio Atlas & Gazetteer. 5th ed. Yarmouth: DeLorme, 1999, pp.64-65. ISBN 0-89933-233-1.
- History of Montgomery County, Ohio, Containing a History of the County ; Its Townships, Cities, Towns, Schools, Churches. Chicago: W. H. Beers & Co. 1882. p. 120.
- "Montgomery County". Jim Forte Postal History. Retrieved 23 January 2016.
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