<p>The Peekskill Post Office is housed in one of South Street's historic buildings. As you step into the lobby, you feel like you've stepped back in time. The room is large and elegant, with marble walls, gorgeous woodwork and a raised ceiling.</p> <p>The Post Office offers traditional mail-related services, such as certified mail, self-storage, insurance, priority express mail and shipping items, such as envelopes and various other assorted supplies, and PO Box rentals.</p>