RANKING · 2020 CENSUS · 24 SHOWN OF 24

Highest Puerto Rican population share, Maryland counties · 2020

Maryland counties ranked by the share of all residents who are Puerto Rican origin (2020 American Community Survey). A concentration measure: Puerto Rican residents as a percentage of total population. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 0.8%.

Puerto Rican Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN SHAREVS 2010

01Cecil County, MDMD107,1311.7%+0.3 pts

02Harford County, MDMD266,4461.5%+0.6 pts

03Charles County, MDMD176,5931.4%0.0 pts

04Anne Arundel County, MDMD603,3801.3%+0.3 pts

05Frederick County, MDMD302,8831.3%+0.3 pts

06Howard County, MDMD339,1831.2%+0.5 pts

07Washington County, MDMD157,7311.2%+0.4 pts

08Montgomery County, MDMD1,074,5821.1%+0.4 pts

09Baltimore County, MDMD847,6500.9%+0.3 pts

10Dorchester County, MDMD33,6280.8%−0.3 pts

11St. Mary's County, MDMD116,6920.8%−0.1 pts

12Baltimore, MDMD569,9970.8%+0.3 pts

13Kent County, MDMD19,5650.8%−0.4 pts

14Prince George's County, MDMD970,3740.8%0.0 pts

15Calvert County, MDMD94,4840.7%+0.1 pts

16Talbot County, MDMD38,2380.7%−0.2 pts

17Wicomico County, MDMD106,8990.7%−0.4 pts

18Carroll County, MDMD176,6770.6%+0.1 pts

19Worcester County, MDMD54,4590.5%+0.5 pts

20Queen Anne's County, MDMD54,4480.5%0.0 pts

21Somerset County, MDMD24,9730.5%−0.3 pts

22Allegany County, MDMD66,8480.4%0.0 pts

23Caroline County, MDMD34,1160.4%0.0 pts

24Garrett County, MDMD28,3700.1%0.0 pts

SHOWING 1–24 OF 24

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