Sophia Y Mitchell (Postmaster)
sophia.y.mitchell@usps.gov
1080 Arlington Ave
Plainfield, NJ 07060
Plainfield, NJ 07060
The Muhlenberg Post Office is located in the state of New Jersey within Union County. This location serves 44,998 Plainfield residents with a median income of $54,045. It's estimated that approximately 71,822 packages pass through this post office each year.