Grandmont No.1, a neighborhood in Detroit, Michigan, is classified as a Low Diversity community with a Black Majority. As of 2022, 94% of the population identifies as Black, with minimal representation from other racial groups. The neighborhood has experienced economic growth over the past decade, with median income increasing from $41,051 in 2013 to $59,769 in 2022. Grandmont No.1 is known for its early 20th-century homes and community associations, which have contributed to neighborhood stability.

Over the past decade, Grandmont No.1 has maintained its status as a Black Majority community. From 2013 to 2018, there was a slight decrease in the Black population from 91% to 85% and an increase in the White population from 6% to 13%. From 2019 to 2022, this trend reversed, with the Black population increasing from 86% to 94%. Other racial groups maintained minimal representation, never exceeding 2% of the population.

The neighborhood has experienced substantial economic growth, with median income increasing by approximately 45% from 2013 to 2022. The period of slightly increasing diversity (2013-2018) coincided with rapid income growth, from $41,051 to $57,676. As the community reverted to a stronger Black Majority from 2019-2022, income growth continued at a more moderate pace, reaching $59,769 in 2022. Population figures have remained relatively stable throughout this period, ranging from about 2,900 to 3,500 residents.