Metro Plates
Black Boston: Growth and Movement
In Boston, metros are where the national movement story is actually decided — the gains and losses of a few dozen large communities add up to the country's direction. This plate reads the movement record of Black Boston, a metro of about 160,000 Black residents, against the currents that have reshaped Black geography in the present era.
Growth and Movement
For Boston, the national movement figures are the current; the state's own distribution, tabled below, is where the current lands. Here, on the plate for Boston, greater Boston's Black population is, by the birthplace data, among the most immigrant of any in this section. In Boston, the comparison the plate invites is therefore two-sided: the national currents on one side, the state's arrivals and departures on the other.
The migration currents read locally in Boston, where the state rows below set the population whose movement the national pattern frames. Stoughton, Milton, Quincy, and the Route 128 belt add growing communities, while Cambridge and Somerville hold smaller, older Black populations under severe housing-cost pressure — the tract data show declining Black counts in the inner core even as the metro total rises, Boston's version of the displacement arithmetic. The benchmark's work is location, not rank: it fixes where Boston stands so the plate can be read.
In Boston, that national movement pattern arrives as local gain or loss, and the table below fixes the population it describes. Boston is the Northern profile in which composition does the most work: abolitionist roots, Great Migration increments, and the North's fullest Caribbean layering in one population of half a million. Held against the national ladder, Boston's own rows say where its attainment stands.
The Currents Around the Metro
In Boston, the present era's currents run in several directions at once: toward the South and its suburbs, out of the highest-cost coastal metros, and into mid-sized metros whose Black populations are growing fastest in percentage terms. The Boston metro's record, in the published counts, is its own negotiation among those currents. In Boston, each decennial census and each survey year revises the picture at the margin; the direction of the lines is the story, and this plate is built to be re-read as the lines extend.
In Boston, that national movement pattern arrives as local gain or loss, and the table below fixes the population it describes. Boston holds about 160,000 Black residents within the city — Black alone or in combination, roughly a quarter of its people — and close to half a million across the metropolitan area, about a tenth of the region. Against the table, the national pattern sharpens into the particular numbers of Boston.
The migration currents read locally in Boston, where the state rows below set the population whose movement the national pattern frames. The city's Black geography centers on a contiguous arc of neighborhoods in its southern half. National material earns its place on this plate only where it sharpens Boston's own record, stated plainly in the table.
Movement into and out of the Boston metro is measured in the federal record as the difference between counts, and its streams — births and deaths inside the metro, arrivals from other American places, arrivals from abroad — are published separately in the estimates program. In Boston, read together with the concentration plate, the movement record explains how the share above came to be, and where it is tending.
What follows is the plate the atlas files as Black Boston: Growth and Movement. A note on this plate's figures, stated once and plainly: Black residents of the Boston metro, alone or in combination: 160,000; Black share of the Boston metro population, alone or in combination: 24%; Black share of the state population, alone: 8%. In Boston, that is the whole of the plate's claim, and it is enough for a reference.
What follows is the plate the atlas files as Black Boston: Growth and Movement. Its table records Black residents of the Boston metro, alone or in combination: 160,000; Black share of the Boston metro population, alone or in combination: 24%. The plate states Boston's record beside its table and lets the record speak.
The atlas gives this subject its own plate — Black Boston: Growth and Movement — because the published record supports one. How this plate is read, for Boston: begin with the map, whose shading bands the published Black share into the legend's five classes, then turn to the table, which states the measures in figures — Black residents of the Boston metro, alone or in combination: 160,000; Black share of the Boston metro population, alone or in combination: 24%. For Boston, that is the whole of the plate's claim, and it is enough for a reference.
| Measure | Figure |
|---|---|
| Black residents of the Boston metro, alone or in combination | 160,000 |
| Black share of the Boston metro population, alone or in combination | 24% |
| Black share of the state population, alone | 8% |
| Black share of the United States population, alone (population estimates) | 13.5% |
Source: U.S. Census Bureau, 2020 Census; American Community Survey; Population Estimates Program. Method: Figures are drawn from the published federal sources named on this page, for the geography named; tile shading bands the published Black population share into the five legend classes. Counts are rounded as published by the source agency, and national benchmark rows are labeled with the basis they are published on.