3/27/95 PENNSYLVANIA Population of Counties by Decennial Census: 1900 to 1990 Compiled and edited by Richard L. Forstall Population Division US Bureau of the Census Washington, DC 20233 Please see file, 1900-90.doc for explanatory notes and documentation. FIPS 1990 1980 1970 1960 00000 248709873 226545805 203211926 179323175 United States 42000 11881643 11863895 11793909 11319366 Pennsylvania 42001 78274 68292 56937 51906 Adams County 42003 1336449 1450085 1605016 1628587 Allegheny County 42005 73478 77768 75590 79524 Armstrong County 42007 186093 204441 208418 206948 Beaver County 42009 47919 46784 42353 42451 Bedford County 42011 336523 312509 296382 275414 Berks County 42013 130542 136621 135356 137270 Blair County 42015 60967 62919 57962 54925 Bradford County 42017 541174 479211 415056 308567 Bucks County 42019 152013 147912 127941 114639 Butler County 42021 163029 183263 186785 203283 Cambria County 42023 5913 6674 7096 7586 Cameron County 42025 56846 53285 50573 52889 Carbon County 42027 123786 112760 99267 78580 Centre County 42029 376396 316660 278311 210608 Chester County 42031 41699 43362 38414 37408 Clarion County 42033 78097 83578 74619 81534 Clearfield County 42035 37182 38971 37721 37619 Clinton County 42037 63202 61967 55114 53489 Columbia County 42039 86169 88869 81342 77956 Crawford County 42041 195257 178541 158177 124816 Cumberland County 42043 237813 232317 223834 220255 Dauphin County 42045 547651 555007 600035 553154 Delaware County 42047 34878 38338 37770 37328 Elk County 42049 275572 279780 263654 250682 Erie County 42051 145351 159417 154667 169340 Fayette County 42053 4802 5072 4926 4485 Forest County 42055 121082 113629 100833 88172 Franklin County 42057 13837 12842 10776 10597 Fulton County 42059 39550 40476 36090 39424 Greene County 42061 44164 42253 39108 39457 Huntingdon County 42063 89994 92281 79451 75366 Indiana County 42065 46083 48303 43695 46792 Jefferson County 42067 20625 19188 16712 15874 Juniata County 42069 219039 227908 234107 234531 Lackawanna County 42071 422822 362346 319693 278359 Lancaster County 42073 96246 107150 107374 112965 Lawrence County 42075 113744 108582 99665 90853 Lebanon County 42077 291130 272349 255304 227536 Lehigh County 42079 328149 343079 342301 346972 Luzerne County 42081 118710 118416 113296 109367 Lycoming County 42083 47131 50635 51915 54517 Mc Kean County 42085 121003 128299 127175 127519 Mercer County 42087 46197 46908 45268 44348 Mifflin County 42089 95709 69409 45422 39567 Monroe County 42091 678111 643621 623799 516682 Montgomery County 42093 17735 16675 16508 16730 Montour County 42095 247105 225418 214368 201412 Northampton County 42097 96771 100381 99190 104138 Northumberland County 42099 41172 35718 28615 26582 Perry County 42101 1585577 1688210 1948609 2002512 Philadelphia County 42103 27966 18271 11818 9158 Pike County 42105 16717 17726 16395 16483 Potter County 42107 152585 160630 160089 173027 Schuylkill County 42109 36680 33584 29269 25922 Snyder County 42111 78218 81243 76037 77450 Somerset County 42113 6104 6349 5961 6251 Sullivan County 42115 40380 37876 34344 33137 Susquehanna County 42117 41126 40973 39691 36614 Tioga County 42119 36176 32870 28603 25646 Union County 42121 59381 64444 62353 65295 Venango County 42123 45050 47449 47682 45582 Warren County 42125 204584 217074 210876 217271 Washington County 42127 39944 35237 29581 28237 Wayne County 42129 370321 392294 376935 352629 Westmoreland County 42131 28076 26433 19082 16813 Wyoming County 42133 339574 312963 272603 238336 York County FIPS 1950 1940 1930 1920 00000 151325798 132164569 123202624 106021537 United States 42000 10498012 9900180 9631350 8720017 Pennsylvania 42001 44197 39435 37128 34583 Adams County 42003 1515237 1411539 1374410 1185808 Allegheny County 42005 80842 81087 79298 75568 Armstrong County 42007 175192 156754 149062 111621 Beaver County 42009 40775 40809 37309 38277 Bedford County 42011 255740 241884 231717 200854 Berks County 42013 139514 140358 139840 128334 Blair County 42015 51722 50615 49039 53166 Bradford County 42017 144620 107715 96727 82476 Bucks County 42019 97320 87590 80480 77270 Butler County 42021 209541 213459 203146 197839 Cambria County 42023 7023 6852 5307 6297 Cameron County 42025 57558 61735 63380 62565 Carbon County 42027 65922 52608 46294 44304 Centre County 42029 159141 135626 126629 115120 Chester County 42031 38344 38410 34531 36170 Clarion County 42033 85957 92094 86727 103236 Clearfield County 42035 36532 34557 32319 33555 Clinton County 42037 53460 51413 48803 48349 Columbia County 42039 78948 71644 62980 60667 Crawford County 42041 94457 74806 68236 58578 Cumberland County 42043 197784 177410 165231 153116 Dauphin County 42045 414234 310756 280264 173084 Delaware County 42047 34503 34443 33431 34981 Elk County 42049 219388 180889 175277 153536 Erie County 42051 189899 200999 198542 188104 Fayette County 42053 4944 5791 5180 7477 Forest County 42055 75927 69378 65010 62275 Franklin County 42057 10387 10673 9231 9617 Fulton County 42059 45394 44671 41767 30804 Greene County 42061 40872 41836 39021 39848 Huntingdon County 42063 77106 79854 75395 80910 Indiana County 42065 49147 54090 52114 62104 Jefferson County 42067 15243 15373 14325 14464 Juniata County 42069 257396 301243 310397 286311 Lackawanna County 42071 234717 212504 196882 173797 Lancaster County 42073 105120 96877 97258 85545 Lawrence County 42075 81683 72641 67103 63152 Lebanon County 42077 198207 177533 172893 148101 Lehigh County 42079 392241 441518 445109 390991 Luzerne County 42081 101249 93633 93421 83100 Lycoming County 42083 56607 56673 55167 48934 Mc Kean County 42085 111954 101039 99246 93788 Mercer County 42087 43691 42993 40335 31439 Mifflin County 42089 33773 29802 28286 24295 Monroe County 42091 353068 289247 265804 199310 Montgomery County 42093 16001 15466 14517 14080 Montour County 42095 185243 168959 169304 153506 Northampton County 42097 117115 126887 128504 122079 Northumberland County 42099 24782 23213 21744 22875 Perry County 42101 2071605 1931334 1950961 1823779 Philadelphia County 42103 8425 7452 7483 6818 Pike County 42105 16810 18201 17489 21089 Potter County 42107 200577 228331 235505 217754 Schuylkill County 42109 22912 20208 18836 17129 Snyder County 42111 81813 84957 80764 82112 Somerset County 42113 6745 7504 7499 9520 Sullivan County 42115 31970 33893 33806 34763 Susquehanna County 42117 35474 35004 31871 37118 Tioga County 42119 23150 20247 17468 15850 Union County 42121 65328 63958 63226 59184 Venango County 42123 42698 42789 41453 40024 Warren County 42125 209628 210852 204802 188992 Washington County 42127 28478 29934 28420 27435 Wayne County 42129 313179 303411 294995 273568 Westmoreland County 42131 16766 16702 15517 14101 Wyoming County 42133 202737 178022 167135 144521 York County FIPS 1910 1900 00000 92228496 76212168 United States 42000 7665111 6302115 Pennsylvania 42001 34319 34496 Adams County 42003 1018463 775058 Allegheny County 42005 67880 52551 Armstrong County 42007 78353 56432 Beaver County 42009 38879 39468 Bedford County 42011 183222 159615 Berks County 42013 108858 85099 Blair County 42015 54526 59403 Bradford County 42017 76530 71190 Bucks County 42019 72689 56962 Butler County 42021 166131 104837 Cambria County 42023 7644 7048 Cameron County 42025 52846 44510 Carbon County 42027 43424 42894 Centre County 42029 109213 95695 Chester County 42031 36638 34283 Clarion County 42033 93768 80614 Clearfield County 42035 31545 29197 Clinton County 42037 48467 39896 Columbia County 42039 61565 63643 Crawford County 42041 54479 50344 Cumberland County 42043 136152 114443 Dauphin County 42045 117906 94762 Delaware County 42047 35871 32903 Elk County 42049 115517 98473 Erie County 42051 167449 110412 Fayette County 42053 9435 11039 Forest County 42055 59775 54902 Franklin County 42057 9703 9924 Fulton County 42059 28882 28281 Greene County 42061 38304 34650 Huntingdon County 42063 66210 42556 Indiana County 42065 63090 59113 Jefferson County 42067 15013 16054 Juniata County 42069 259570 193831 Lackawanna County 42071 167029 159241 Lancaster County 42073 70032 57042 Lawrence County 42075 59565 53827 Lebanon County 42077 118832 93893 Lehigh County 42079 343186 257121 Luzerne County 42081 80813 75663 Lycoming County 42083 47868 51343 Mc Kean County 42085 77699 57387 Mercer County 42087 27785 23160 Mifflin County 42089 22941 21161 Monroe County 42091 169590 138995 Montgomery County 42093 14868 15526 Montour County 42095 127667 99687 Northampton County 42097 111420 90911 Northumberland County 42099 24136 26263 Perry County 42101 1549008 1293697 Philadelphia County 42103 8033 8766 Pike County 42105 29729 30621 Potter County 42107 207894 172927 Schuylkill County 42109 16800 17304 Snyder County 42111 67717 49461 Somerset County 42113 11293 12134 Sullivan County 42115 37746 40043 Susquehanna County 42117 42829 49086 Tioga County 42119 16249 17592 Union County 42121 56359 49648 Venango County 42123 39573 38946 Warren County 42125 143680 92181 Washington County 42127 29236 30171 Wayne County 42129 231304 160175 Westmoreland County 42131 15509 17152 Wyoming County 42133 136405 116413 York County