Maryland Counties by Population (2025)

The most populous counties in Maryland are Montgomery County with 1,082,273, Prince George's County at 966,629, Baltimore County with 852,425, Anne Arundel County at 602,350, and Baltimore city/county with 568,271. You can get the most current Census population data for all 24 Maryland counties, sorted from the most populous counties in Maryland to the least, according to the 2024 Population Estimates Program.

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