This story is Part 1 of WTOP’s three-part series “On the Move: The D.C. region’s population trends.”

Immigration and intermarriage are helping the D.C. region become more diverse, experts said.

According to a WTOP analysis of recent census data, neighborhoods across D.C., Maryland and Virginia are all reporting increases in their Hispanic and Asian populations.

In D.C. and Maryland specifically, immigration is the only factor preventing a population decline, according to Michael Bader, director of the 21st Century Cities Initiative at Johns Hopkins University.

From July 1, 2023 to July 1, 2024, D.C. reported an additional 3,475 people who identify as Asian and 4,514 more people who identify as Hispanic.

Over that same period in Montgomery County, Maryland, there were 1,746 more people

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