Context: According to [0], $400,000 is in the top 1% of individual income across the US. It's in the top 3% of household income within California [1] and top 2% in SF/Oakland/Fremont [2].

0: https://dqydj.com/income-percentile-calculator/

1: https://dqydj.com/income-percentile-by-state-calculator/

2: https://dqydj.com/2018-income-percentile-by-city-calculator/