There are two census tracts of concentrated white wealth in Alameda that do not have any Black households with low incomes

Black-White Index of Concentration at the Extremes, City of Alameda, 2020

For this analysis, “high income” corresponds to the 80th percentile of the city of Alameda's household income distribution ($150,000 a year or more) and “low income” corresponds to the 20th percentile of the household income distribution ($30,000 a year or less).
Source: Bay Area Equity Atlas Analysis of the 2020 5-year American Community Survey summary data Get the data