The statewide average filer income in 2022 was about $111,000. The Bay Area’s highest-income ZIP codes are mostly concentrated in San Mateo and Santa Clara counties, where a 2023 study indicated ...

And more broadly, San Francisco's most-educated ZIP code — 94123 — wasn't at the head of the class in the Bay Area, according to the data. Farther south on the Peninsula, the 94305 ZIP code ...