Do all Littleton home values get raised because it is near Ken Caryl and Highlands Ranch?

Actually, the area we call "Littleton" is not little at all -- it's enormous. And, if you look on the map above, you'll see that Ken Caryl -- and much of what we call Littleton -- isn't even IN LIttleton. That whole southwest part is actually not part of the city of Littleton, but is an unincorporated part of Jefferson County that uses the Littleton name for mailing address purposes. And, as for being close to nice neighborhoods, there are several very upscale neighborhoods within the Littleton city limits as well.

No, they don't. Littleton, Ken Caryl, and Highlands Ranch are all very distinct areas and the values within these areas are driven more by each area itself.