Why build an eruv in an area with no or few Jewish families?

While eruvin are traditionally built within areas where Jewish families live, there are times where the physical structures present make this hard or impossible.

In the case of Rockland County, an eruv encompasses the vast majority of areas in which Jewish families reside. To enclose the remaining areas, it was necessary to create an eruv that extended to the closest available utility poles in Bergen County, which can be seen on the map here in blue.

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