In Cape Cod or on Cape Cod?

First, as you notice in the first paragraph it's ON Cape Cod. ON. Not IN, ON. This is a common mistake that instantly delineates a local from a mere visitor.

What is a cape as in Cape Cod?

In geography, a cape is a headland or a promontory of large size extending into a body of water, usually the sea. A cape usually represents a marked change in trend of the coastline which makes them prone to natural forms of erosion, mainly tidal actions.

Is Cape Cod referred to as the cape?

One question that is often asked among visitors to the area is, “Is Cape Cod a city?” Cape Cod is a geographic cape and island that is connected to the state of Massachusetts. The area is made up of several different cities, towns and villages that span the cape.