ppemRoberto-Gallardo-is-a-Community-amp-Economic-Development-Specialist-at-Mississippi-State-Universitys-Southern-Rural-Development-Center-and-an-assistant-extension-professor.-Bo-Beaulieu-is-director-of-the-Southern-Rural-Development-Center.-Monica-Rosas-is-a-Research-Associate-at-the-Social-Science-Research-Center-at-Mississi

The more diverse the county, the lower the median age. This chart divides the nation’s 3100 counties into ten equal groups, arranged left to right by how ethnically diverse they are. (The least diverse group is on the left.) As the groups get more diverse, their median age declines. The red bars are 2010; the blue bars are 2000.

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