Miamisburg (mye-AM-ees-burg) is a city in Montgomery County, Ohio, United States. The population was 20,181 at the 2010 census. It is part of the Dayton Metropolitan Statistical Area. Miamisburg is known for its large industry (mainly for its nuclear operations during World War II) and retail factors (such as the Dayton Mall), which is actually located in Miami twp., but is mainly known for being the home to the Miamisburg Mound. Many large corporations are located in Miamisburg such as LexisNexis, which is in Miami Twp., Dayco, X-spine, Isotec, Teradata, and Motoman (Miami Twp.) Miamisburg borders Miami Township, Springboro, and West Carrollton. The sister city of Miamisburg is Owen Sound, Ontario.

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