|  Photo from Wikipedia | Decatur, MI 49045 Post Office Location: 127 South Phelps Street; Decatur, MI Year Post Office built: Town(s) Served: Decatur Acceptable City Names: Decatur Not Acceptable City Names: Sectional Service Facility: Kalamazoo County(ies): Cass, Kalamazoo, Van Buren Info on Decatur: The Village of Decatur is located in Southern Van Buren County. This is home to aprox. 1,819 residents (2010 census). It dates back to 1847. | 
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