National Plates
Metro America: The Concentration Plate
If the share plate reads presence and the count table reads weight, the concentration plate reads settlement: where, physically, Black America gathers. The answer is metropolitan. Roughly nine in ten Black Americans live in a metropolitan area, and the largest gatherings are very large indeed — the New York metropolitan area alone holds about three and a half million Black residents, more than the total population of most states. Atlanta, Washington, Chicago, Dallas, Houston, Los Angeles, Miami, and Philadelphia follow above or near the million mark. This plate introduces the metropolitan geography that the Metro Plates section then maps forty deep.
The ranking and what it hides
A ranking by count rewards metropolitan scale, and the top of the list mixes two kinds of concentration. New York, Chicago, and Los Angeles are vast metros in which Black residents form a substantial but minority share; Atlanta and Washington pair enormous counts with shares around or above thirty percent, making them simultaneously the nation's largest and among its most concentrated large Black metros. A second tier — Memphis, Jackson, New Orleans, Birmingham, Baton Rouge — holds the highest shares of all, above forty percent in the first two, at counts an order of magnitude smaller. Both tiers matter to the atlas's design: the first describes where most Black Americans are, the second where Black presence within a place runs deepest, and the metro plates carry a share reading and a count reading for every metro so neither is mistaken for the other.
The suburban shape
The modern concentration is increasingly a suburban one. Across the largest metros, a majority of Black residents now live outside the principal city — in Atlanta's case, overwhelmingly so, across a ring of suburban counties that includes some of the most affluent majority-Black jurisdictions in the country, such as Maryland's Prince George's County on the Washington side and Georgia's DeKalb and Clayton counties. The movement plates trace how this happened decade by decade; the metro plates draw its current form county by county within each metro, because the county is the scale at which the pattern lives. A reader who knows only the central-city map of a generation ago will misread today's plates, and the atlas's front-door feature, Your Place, is built to route around that error: search a place, and every plate that touches it — metro, county, state — is gathered on one page.
Reading the concentration plate
Metropolitan boundaries are statistical constructions, revised as counties' commuting ties shift, and the atlas uses the Census Bureau's metropolitan statistical area definitions as published with each data release, noting the vintage on every plate. Counts here are Black-alone figures from the 2020 Census unless a plate states otherwise. What the plate cannot show — density within counties, the neighborhood grain at which daily life is actually arranged — belongs to the county and place plates, and ultimately to the gazetteer. The concentration plate's work is simpler and worth doing well: to fix in the reader's mind the standing fact that Black America is a metropolitan population with a southern center, a fact every subsequent section assumes.
Why the metro plates run forty deep
The Metro Plates section gives the forty largest Black metropolitan areas three plates each — distribution, economy, and movement — because the metro is the scale at which the modern Black geography is actually arranged. State lines divide metros without describing them; Washington's Black population ignores the Maryland and Virginia line entirely, and St. Louis and Kansas City straddle their rivers in the same way. County lines, by contrast, describe the real internal pattern: the central county, the suburban ring, the high-share jurisdictions and the fast-growing edge. A metro plate built on counties can show all of it at once. The concentration plate's ranking also sets the section's order: the forty are chosen by Black population count from the most recent census and survey readings, and the gazetteer gathers, for any place a reader names, every plate at every scale that touches it — so the concentration the reader starts from can always be traced down to the ground it stands on. Every metro plate that follows is drawn county by county from the published federal counts, and cited to them.
Two further figures complete the plate's account of Metro America: Other metros above one million: Chicago, Dallas, Houston, Los Angeles, Miami, Philadelphia; Share of Black Americans in metropolitan areas: Roughly nine in ten. The measures above and these together fix the population of the nation as this plate describes it — its size, its share, its standing nationally — and the text that surrounds them interprets them without rounding or extension beyond the source.
| Measure | Figure |
|---|---|
| Largest Black metro population | New York, about 3.5 million (Black alone) |
| Second and third | Atlanta, about 2.2 million; Washington, about 1.7 million |
| Other metros above one million | Chicago, Dallas, Houston, Los Angeles, Miami, Philadelphia |
| Share of Black Americans in metropolitan areas | Roughly nine in ten |
| Highest large-metro Black share | Memphis and Jackson, above 45 percent |
Source: U.S. Census Bureau, 2020 Census Demographic and Housing Characteristics File; U.S. Census Bureau, American Community Survey. 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.