The Monoculture Map: Greater Boston's Most Homogeneous Towns, Ranked by the Census

Using ACS 2020–2024 5-year estimates, Greater Boston's towns sort into sharp demographic monocultures. On race: Cohasset (92.7% white) and Hingham (92.6%) at one pole; Lawrence (83.2% Hispanic) and Chelsea (67.3% Hispanic) at the other; Randolph (39.8% Black plurality) and Brockton (33.5% Black) as a third. On credentials: Lexington (58.6% graduate degrees) and Brookline (57.5%) versus Lawrence (5.1%). On money: at least five towns top-code the income survey at $250,001+ while Lawrence sits at $60,433. The 'diverse metro' is a mosaic of internally uniform tiles.