Data / Rankings / Foreign-born population share / Counties in Maryland

Counties in Maryland by foreign-born share of the population

Montgomery County had the highest foreign-born share of the population of 24 counties in 2023, at 33.4%. Garrett County had the lowest, at 1.4%. The median was 6.1% and the figure for Maryland was 16.3%. Source: the U.S. Census Bureau.

Highest33.4Montgomery County
Lowest1.4Garrett County
Median6.124 counties
Maryland16.3History

All counties, 2023

CSVChart (SVG)

Montgomery CountyMontgomery County: 33.4 %33.4Prince George's CountyPrince George's County: 24.9 %24.9Howard CountyHoward County: 22.2 %22.2Frederick CountyFrederick County: 13 %13Baltimore CountyBaltimore County: 12.8 %12.8Anne Arundel CountyAnne Arundel County: 9.8 %9.8Wicomico CountyWicomico County: 9.3 %9.3Baltimore cityBaltimore city: 8.8 %8.8Talbot CountyTalbot County: 8.5 %8.5Charles CountyCharles County: 8.4 %8.4Caroline CountyCaroline County: 6.8 %6.8Washington CountyWashington County: 6.4 %6.4Harford CountyHarford County: 5.8 %5.8Queen Anne's CountyQueen Anne's County: 5.1 %5.1Worcester CountyWorcester County: 5.1 %5.1Carroll CountyCarroll County: 5.1 %5.1St. Mary's CountySt. Mary's County: 4.5 %4.5Kent CountyKent County: 4.4 %4.4Dorchester CountyDorchester County: 4 %4Somerset CountySomerset County: 3.8 %3.8Calvert CountyCalvert County: 3.7 %3.7Cecil CountyCecil County: 3.7 %3.7Allegany CountyAllegany County: 2.1 %2.1Garrett CountyGarrett County: 1.4 %1.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Montgomery County33.4+0.7 pts
2Prince George's County24.9+0.8 pts
3Howard County22.2+0.4 pts
4Frederick County13+0.9 pts
5Baltimore County12.8+0.6 pts
6Anne Arundel County9.8+0.6 pts
7Wicomico County9.3+1.1 pts
8Baltimore city8.8+0.7 pts
9Talbot County8.5+1 pts
10Charles County8.4+0.9 pts
11Caroline County6.8+0.5 pts
12Washington County6.4+0.8 pts
13Harford County5.8+0.8 pts
14Queen Anne's County5.1+0.8 pts
15Worcester County5.1+0.2 pts
16Carroll County5.1+0.4 pts
17St. Mary's County4.5-0.5 pts
18Kent County4.4+0.5 pts
19Dorchester County4+0.1 pts
20Somerset County3.8-0.8 pts
21Calvert County3.7+0.1 pts
22Cecil County3.7-0.3 pts
23Allegany County2.1+0.1 pts
24Garrett County1.4+0.1 pts

Other periods

About this ranking

People who were not US citizens at birth, as a percentage of the total population. Includes naturalized citizens, lawful permanent residents, temporary migrants and unauthorized immigrants. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Based on place of birth, not nationality: a naturalized citizen counts as foreign born, and people born in Puerto Rico, the US island areas or abroad to American parents count as native. Not comparable with foreign_population_share, which counts foreign nationals in Spain and the EU. Calculated from counts in ACS table B05002, which are stored as inputs.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b05002.dat. Retrieved 2026-10-09.

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Rank Counties in Maryland by foreign-born share of the population using official data, and cite the source.
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Questions

Which county has the highest foreign-born share of the population?

Montgomery County, with 33.4% in 2023, according to the U.S. Census Bureau.

Which county has the lowest foreign-born share of the population?

Garrett County, with 1.4% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. Retrieved 2026-10-09.

Foreign-born population share: other rankings

Counties in Maryland: more rankings