Earlier quoted context omitted.
Sure I could've focused on explicitly the Peninsula like you originally mentioned, but 75% of the Peninsula is living in Redwood City, Palo Alto, Mountain View, Sunnyvale, not the 4 adjacent tiny towns you mentioned + San Mateo.
So go add focus on those towns as well or go limit it to mid Peninsula.
The distinction people I know made is how far south or north people were willing to commute. So commuting from Palo Alto or Mountain View to SF was considered a really long commute. Commuting from Sunnyvale was considered untenable long term.
Most recent SF residents seem to have an additional line around SF and consider anything outside SF far. Oh well.
https://www.reddit.com/r/bayarea/comments/30qv6d/help_is_mou...