Sorry if I appear to be obsessing, but if I stop working even for a second I start thinking about this.
In the map below, each blue circle represents an area searched. With the searches, it was really hard to know the exact area because of privacy concerns. So in a way all locations are only my best guess, although I have links to support why I placed each marker where I did.
I thought this screen shot gave a better indication of the UNIDENTIFIED remains location in relation to searches done specifically for Kyron.
For reference, Kyron's home is slightly above the blue circle with a #1 inside, and his school is just below it.