> The majority of it is not Bel Air...

Menlo Park was never a "middle class" town. The 101 was always the (literal) redline.

The median household income is $210K [0] and it's the same demographic, unlike historically lower middle class but now upper middle class San Mateo [1].

A Menlo Park home address that is on the correct side of the 101 opens the same doors in the Bay that a Bel Air address does in Los Angeles or an Austin Hills address does in Austin.

Rich doesn't equal conspicuous, especially in the Bay Area - "Wealth is quiet, rich is loud, poor is flashy"

[0] - https://www.census.gov/quickfacts/fact/table/menloparkcityca...

[1] - https://www.census.gov/quickfacts/fact/table/sanmateocitycal...