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The newest data release from the 2020 census provided a more up-to-date picture of Maryland and the United States as a whole, revealing that less than half of all Marylanders now identify as white, mirroring a national trend.

The data will be used to draw new boundaries for congressional and local legislative districts, shaping the political landscape for the next decade. The population numbers also help determine how federal dollars are divvied up among states and communities and where new schools and roads are built.

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Take a look at how the demographics of your county and Maryland as a whole have changed over the last 10 years.

Racial composition by county 2010 vs 2020

In Baltimore City, the percentage of white and Black residents decreased as the percentage of Asian residents, residents who are two or more races, or another race increased. The number of residents who are two or more races more than doubled over the last 10 years in the city.

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Ethnic composition by county 2010 vs 2020

A reflection of the state’s growing Hispanic population, the number of Hispanic or Latino residents in Baltimore City grew 3.6% since the last census. The state as a whole saw a 4% increase in Hispanic or Latino residents, from 8% to 12%.

Largest racial group by census block group, 2020

The White L and the Black Butterfly, terms coined by Dr. Lawrence T. Brown to describe Baltimore’s hypersegregation, are starkly visible when looking at the racial diversity of each census block.

Change in voting age population by county from 2010 to 2020

Like U.S. as a whole, Maryland’s population aged over the last decade, with the 18+ share of population rising 1.38%. And like country as a whole, the under 18 cohort is more diverse than the 18+ one, with more Hispanic and multiracial residents and fewer non-Hispanic white residents.

Diversity index

Montgomery County, Howard County and Charles County are some of the most diverse jurisdictions in the state, with diversity indexes of 73%, 70% and 64% respectively. Garrett County, with 95.1% white residents, has the lowest diversity index in the state at 9%.

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