Prospect Lefferts Gardens, a neighborhood in Brooklyn, New York, exhibits a demographic profile categorized as a "Black Majority" community with increasing diversity. As of 2022, the neighborhood has a population of 29,548 and a median income of $72,550. The area is known for its historic district with early 20th-century architecture and proximity to Prospect Park.

Over the past decade, Prospect Lefferts Gardens has undergone a significant demographic transition. In 2013, the neighborhood was in the "Black Majority" category with 72% of the population identifying as Black. By 2022, while still maintaining a "Black Majority" status, the Black population decreased to 55%. The White population increased from 12% in 2013 to 24% in 2022. The Asian and Hispanic populations showed modest increases. The "Two or More Races" category increased from 2% to 5% over the decade.

The demographic shifts in Prospect Lefferts Gardens correlate with economic changes. The median income rose from $57,062 in 2013 to $72,550 in 2022, an increase of about 27%. The population peaked in 2017 at 33,393 and declined to 29,548 in 2022. This population decrease, coupled with rising incomes, may indicate a gentrification process where lower-income residents are being displaced by higher-income newcomers.