Brundis Island, a neighborhood in Pittsburgh, Pennsylvania, exhibits a unique demographic profile. As of 2022, the community is classified as having a "Black Majority," with 54% of its population identifying as Black. The neighborhood has experienced a significant population decline, decreasing from 935 residents in 2015 to 24 in 2022. This substantial decrease in population indicates a major transformation in the neighborhood's composition.

Over the past decade, Brundis Island has undergone several transitions in its racial composition. From 2013 to 2016, the neighborhood shifted from "Moderate Diversity" to "White Plurality," with the white population increasing from 46% to 53% and the Black population decreasing from 43% to 39%. From 2017 to 2019, the community reverted to "Moderate Diversity." In 2020, there was a brief return to "White Plurality" (53% white). By 2021-2022, the neighborhood transitioned to a "Black Majority," with the Black population reaching 53% in 2021 and 54% in 2022. These changes indicate a "Transitional Community" with significant shifts in racial makeup over a relatively short period.

Median income data is not available for Brundis Island, limiting the ability to correlate economic trends with demographic shifts. The dramatic population decline from 935 in 2015 to 24 in 2022 suggests significant economic or environmental factors. This extreme depopulation could indicate large-scale redevelopment projects, environmental issues, economic collapse of local employers, or deliberate relocation of residents due to policy decisions.