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

Counties in Pennsylvania by foreign-born share of the population

Philadelphia County had the highest foreign-born share of the population of 67 counties in 2021, at 14.3%. Jefferson County had the lowest, at 0.5%. The median was 2% and the figure for Pennsylvania was 7.1%. Source: the U.S. Census Bureau.

Highest14.3Philadelphia County
Lowest0.5Jefferson County
Median267 counties
Pennsylvania7.1History

Top 40 counties, 2021

CSVChart (SVG)

Philadelphia CountyPhiladelphia County: 14.3 %14.3Lehigh CountyLehigh County: 12.6 %12.6Montgomery CountyMontgomery County: 11 %11Delaware CountyDelaware County: 10.8 %10.8Monroe CountyMonroe County: 10.3 %10.3Bucks CountyBucks County: 9.9 %9.9Chester CountyChester County: 9.5 %9.5Dauphin CountyDauphin County: 8.2 %8.2Centre CountyCentre County: 8 %8Northampton CountyNorthampton County: 7.9 %7.9Berks CountyBerks County: 7.9 %7.9Luzerne CountyLuzerne County: 7.8 %7.8Pike CountyPike County: 7.3 %7.3Cumberland CountyCumberland County: 6.7 %6.7Allegheny CountyAllegheny County: 6.1 %6.1Lackawanna CountyLackawanna County: 5.8 %5.8Lancaster CountyLancaster County: 5.5 %5.5Montour CountyMontour County: 4.6 %4.6Erie CountyErie County: 4.3 %4.3Lebanon CountyLebanon County: 4.2 %4.2York CountyYork County: 4.2 %4.2Franklin CountyFranklin County: 4.1 %4.1Wayne CountyWayne County: 3.6 %3.6Adams CountyAdams County: 3.5 %3.5Union CountyUnion County: 3.3 %3.3Carbon CountyCarbon County: 3 %3Clearfield CountyClearfield County: 2.6 %2.6Columbia CountyColumbia County: 2.5 %2.5Juniata CountyJuniata County: 2.4 %2.4Butler CountyButler County: 2.3 %2.3Schuylkill CountySchuylkill County: 2.1 %2.1Lycoming CountyLycoming County: 2 %2Washington CountyWashington County: 2 %2Forest CountyForest County: 2 %2Beaver CountyBeaver County: 2 %2Sullivan CountySullivan County: 1.9 %1.9Bradford CountyBradford County: 1.8 %1.8Susquehanna CountySusquehanna County: 1.8 %1.8Indiana CountyIndiana County: 1.8 %1.8Westmoreland CountyWestmoreland County: 1.6 %1.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)
1Philadelphia County14.3
2Lehigh County12.6
3Montgomery County11
4Delaware County10.8
5Monroe County10.3
6Bucks County9.9
7Chester County9.5
8Dauphin County8.2
9Centre County8
10Northampton County7.9
11Berks County7.9
12Luzerne County7.8
13Pike County7.3
14Cumberland County6.7
15Allegheny County6.1
16Lackawanna County5.8
17Lancaster County5.5
18Montour County4.6
19Erie County4.3
20Lebanon County4.2
21York County4.2
22Franklin County4.1
23Wayne County3.6
24Adams County3.5
25Union County3.3
26Carbon County3
27Clearfield County2.6
28Columbia County2.5
29Juniata County2.4
30Butler County2.3
31Schuylkill County2.1
32Lycoming County2
33Washington County2
34Forest County2
35Beaver County2
36Sullivan County1.9
37Bradford County1.8
38Susquehanna County1.8
39Indiana County1.8
40Westmoreland County1.6
41Fayette County1.6
42Mercer County1.5
43Lawrence County1.5
44McKean County1.5
45Clinton County1.5
46Wyoming County1.4
47Tioga County1.4
48Blair County1.3
48Northumberland County1.3
50Huntingdon County1.3
51Warren County1.3
52Crawford County1.2
53Perry County1.1
54Potter County1.1
55Snyder County1.1
56Somerset County1
57Cambria County0.9
58Clarion County0.9
59Venango County0.9
60Elk County0.8
61Mifflin County0.8
62Fulton County0.8
63Bedford County0.7
63Greene County0.7
65Cameron County0.6
66Armstrong County0.6
67Jefferson County0.5

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/2021/table-based-SF/data/5YRData/acsdt5y2021-b05002.dat. Retrieved 2026-10-09.

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Rank Counties in Pennsylvania 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?

Philadelphia County, with 14.3% in 2021, according to the U.S. Census Bureau.

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

Jefferson County, with 0.5% in 2021.

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 Pennsylvania: more rankings