RANKING · 2020 CENSUS · 24 SHOWN OF 24

Largest American population, Maryland counties · 2020

Maryland counties ranked by the number of residents who are American ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 7,303.

American ancestry: full group profile →

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SAME RANKING BYCities States Metros

RELATEDHighest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010

01Baltimore County, MDMD847,65034,781−14%

02Montgomery County, MDMD1,074,58233,192+22%

03Anne Arundel County, MDMD603,38027,808+21%

04Prince George's County, MDMD970,37427,635+61%

05Carroll County, MDMD176,67720,334+44%

06Baltimore, MDMD569,99717,582−36%

07Harford County, MDMD266,44615,113+1%

08Frederick County, MDMD302,88315,067+4%

09Howard County, MDMD339,18311,547−10%

10Washington County, MDMD157,7319,282−25%

11St. Mary's County, MDMD116,6928,079−10%

12Cecil County, MDMD107,1317,303−17%

13Wicomico County, MDMD106,8996,952+19%

14Charles County, MDMD176,5936,503−28%

15Dorchester County, MDMD33,6285,252−4%

16Calvert County, MDMD94,4845,121−22%

17Somerset County, MDMD24,9734,997+106%

18Allegany County, MDMD66,8484,676−47%

19Worcester County, MDMD54,4594,081+14%

20Caroline County, MDMD34,1163,486+53%

21Queen Anne's County, MDMD54,4483,075+7%

22Talbot County, MDMD38,2382,149−33%

23Garrett County, MDMD28,3701,615−61%

24Kent County, MDMD19,5651,385−12%

SHOWING 1–24 OF 24

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS