Concord, NH

ZIP code 03306 is a PO Box designation associated with Concord, New Hampshire, rather than a distinct, continuously mapped neighborhood. As a result, no major physical landmarks can be reliably identified as lying within the ZIP code itself. Concord’s best-known landmarks include the New Hampshire State House, the New Hampshire Historical Society, and the McAuliffe-Shepard Discovery Center; these have other Concord ZIP codes.