Atherton isn't rural; by definition, because it's an incorporated city (OK, "town").
Palo Alto has a slightly lower nasal altitude, but only because it's an actual city with a few people that make actual salaries. Ummm ... Leland Stanford Jr. University???
Complaining about airplane noise? Not far from SF Intl. and Googleplex (Moffatt)? Duh? The same thing happens in the Sacramento area, though - the El Dorado people scream about being kept awake all night by jets landing at Mather, but if you look at actual nonmilitary traffic [
flightaware.com] there are no landings by anybody, usually, between about 8:30 PM and 4 AM, and the first flight crossing ED Co. typically isn't until after 5 AM. Most traffic is in the daytime. Methinks it's analogous to the oil train thing (I notice it ergo it's bad). What they're probably hearing c. midnite are overflights from the Bay Area and Sac Intl. as they climb out to the east.