Below is an interactive map of the parishes in the Diocese of Metuchen. Note that this map has not been updated since it was created around 2018. The diocese itself hosts a better and updated map here.
You can embed this map into other web pages using the following code:
<iframe src="https://f001.backblazeb2.com/file/verbumcaro-data/maps/metuchen-parishes/metuchen_parish_map.html" height="500px" width="100%"></iframe>