Longwood, a neighborhood in Brookline, Massachusetts, exhibits a White Majority status with moderate diversity as of 2022. The white population comprises 58% of the total, with Asian (19%) and Hispanic (15%) communities representing significant minorities. The neighborhood's median income of $92,946 in 2022 indicates an affluent area. Longwood's proximity to several prestigious medical institutions, including parts of the Longwood Medical and Academic Area, likely influences its demographic and economic characteristics.

Over the past decade, Longwood has transitioned from a Low Diversity community to one with Moderate Diversity. In 2013, the neighborhood displayed a clear White Majority (73%) with low representation from other groups. By 2022, while still maintaining a White Majority, the community has seen significant increases in its Asian and Hispanic populations. The Asian population increased from 16% in 2013 to 19% in 2022, with a peak of 23% in 2021. The Hispanic community grew from 3% in 2013 to 15% in 2022. The Black population increased from 1% in 2013 to 4% in 2022.

The median income in Longwood has shown volatility over the past decade, with an overall upward trend. From $109,336 in 2013, it reached a peak of $123,653 in 2021 before dropping to $92,946 in 2022. The periods of highest income (2017 and 2021) coincide with increased diversity, particularly growth in the Asian and Hispanic populations. This suggests that the neighborhood's growing diversity may be linked to high-skilled, well-compensated professionals moving into the area.