Delia C Davenport (Postmaster)
delia.c.davenport@usps.gov
126 Main St
Newmarket, NH 03857
Newmarket, NH 03857
The Newmarket Post Office is located in the state of New Hampshire within Rockingham County. This location serves 9,006 Newmarket residents with a median income of $60,777. It's estimated that approximately 14,375 packages pass through this post office each year.