1870

 

RANKCOUNTYTOTAL POPULATION RANKCOUNTYTOTAL POPULATION
1Philadelphia County674,022 39Adams County30,315
2Allegheny County262,204 2Allegheny County262,204
3Luzerne County160,915 24Armstrong County43,382
4Lancaster County121,340 32Beaver County36,148
5Schuylkill County116,428 40Bedford County29,635
6Berks County106,701 6Berks County106,701
7Montgomery County81,612 28Blair County38,051
8Chester County77,805 17Bradford County53,204
9York County76,134 11Bucks County64,336
10Erie County65,973 31Butler County36,510
11Bucks County64,336 30Cambria County36,569
12Crawford County63,832 65Cameron County4,273
13Northampton County61,432 43Carbon County28,144
14Dauphin County60,740 35Centre County34,418
15Westmoreland County58,719 8Chester County77,805
16Lehigh County56,796 45Clarion County26,537
17Bradford County53,204 47Clearfield County25,741
18Mercer County49,977 50Clinton County23,211
19Washington County48,483 41Columbia County28,766
20Venango County47,925 12Crawford County63,832
21Lycoming County47,626 23Cumberland County43,912
22Franklin County45,365 14Dauphin County60,740
23Cumberland County43,912 27Delaware County39,403
24Armstrong County43,382 62Elk County8,488
25Fayette County43,284 10Erie County65,973
26Northumberland County41,444 25Fayette County43,284
27Delaware County39,403 66Forest County4,010
28Blair County38,051 22Franklin County45,365
29Susquehanna County37,523 60Fulton County9,360
30Cambria County36,569 46Greene County25,887
31Butler County36,510 38Huntingdon County31,251
32Beaver County36,148 33Indiana County36,138
33Indiana County36,138 51Jefferson County21,656
34Tioga County35,097 54Juniata County17,390
35Centre County34,418 4Lancaster County121,340
36Lebanon County34,096 44Lawrence County27,298
37Wayne County33,188 36Lebanon County34,096
38Huntingdon County31,251 16Lehigh County56,796
39Adams County30,315 3Luzerne County160,915
40Bedford County29,635 21Lycoming County47,626
41Columbia County28,766 61McKean County8,825
42Somerset County28,226 18Mercer County49,977
43Carbon County28,144 53Mifflin County17,508
44Lawrence County27,298 52Monroe County18,362
45Clarion County26,537 7Montgomery County81,612
46Greene County25,887 57Montour County15,344
47Clearfield County25,741 13Northampton County61,432
48Perry County25,447 26Northumberland County41,444
49Warren County23,897 48Perry County25,447
50Clinton County