To undersand why crime is virtually non-existent, you need to understand that Ocraoke is an island with no bridges or roads on or off. So if a serious crime occured, the criminal would need to escape via ferry or their own watercraft. Both provide ample ease and time for capture. One young mother described it best: "if someone tried to kidnap her son, the coast guard would lock down the ferries and get him back." Of course this oversimplifies, but it does represent the challenges to crime ever running amock on Ocracoke.
Sure where people go, crime goes, but this Island is a close knit community that makes crime almost impossible to thrive.