RANKING · 1990 CENSUS · 67 SHOWN OF 67

Least racially diverse, Pennsylvania counties · 1990

Pennsylvania counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Jefferson County, PAPA43,2551−33%

02Clearfield County, PAPA78,1002−68%

03Juniata County, PAPA23,4032−65%

04Mifflin County, PAPA46,1272−42%

05Somerset County, PAPA72,0042−68%

06Elk County, PAPA29,9262−1%

07Warren County, PAPA37,0382+7%

08Bedford County, PAPA47,4802−19%

09Potter County, PAPA15,8972−28%

10Clinton County, PAPA37,8703−21%

11Susquehanna County, PAPA38,2373−0%

12Cameron County, PAPA4,2113+13%

13Perry County, PAPA46,8063−5%

14Wyoming County, PAPA25,7903−15%

15Armstrong County, PAPA63,6983−7%

16Bradford County, PAPA59,6003−10%

17Sullivan County, PAPA5,8563−58%

18Northumberland County, PAPA89,9203−49%

19Fulton County, PAPA14,4833+29%

20Clarion County, PAPA36,6804−7%

21Schuylkill County, PAPA145,0854−59%

22Columbia County, PAPA66,1934−34%

23Butler County, PAPA200,1694−20%

24Blair County, PAPA119,5414−23%

25Snyder County, PAPA39,6554−27%

26Carbon County, PAPA65,8684−32%

27Tioga County, PAPA40,5024+18%

28Venango County, PAPA49,3464−4%

29Lackawanna County, PAPA216,5025−44%

30Forest County, PAPA6,6145−45%

31Greene County, PAPA33,8855−60%

32Wayne County, PAPA51,7035−42%

33Crawford County, PAPA81,7925−13%

34Luzerne County, PAPA332,1266−27%

35Indiana County, PAPA82,8786−8%

36Westmoreland County, PAPA349,3247−7%

37Montour County, PAPA17,8687−6%

38Cambria County, PAPA128,9688−23%

39McKean County, PAPA38,9848+5%

40Lycoming County, PAPA112,5879−34%

41Cumberland County, PAPA277,2709−29%

42Lawrence County, PAPA83,91110−11%

43Adams County, PAPA107,59410−22%

44Franklin County, PAPA160,65210−10%

45Fayette County, PAPA123,02110+2%

46Washington County, PAPA210,80210+2%

47Lebanon County, PAPA146,38011−33%

48Pike County, PAPA62,80811−45%

49Monroe County, PAPA167,17913−59%

50Mercer County, PAPA107,86014−10%

51Union County, PAPA42,31314−48%

52Huntingdon County, PAPA43,00114−7%

53York County, PAPA473,19715−17%

54Beaver County, PAPA166,03215−7%

55Bucks County, PAPA647,82815−18%

56Centre County, PAPA157,39316−18%

57Erie County, PAPA265,83217−17%

58Lancaster County, PAPA563,15921−6%

59Montgomery County, PAPA877,64322−27%

60Northampton County, PAPA324,41123−7%

61Chester County, PAPA557,11624−13%

62Berks County, PAPA440,07225−22%

63Lehigh County, PAPA384,38326−24%

64Allegheny County, PAPA1,225,03529−13%

65Delaware County, PAPA580,93732−22%

66Dauphin County, PAPA293,35141−13%

67Philadelphia County, PAPA1,574,28174−3%

SHOWING 1–67 OF 67

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES