| table with row headers in column A and column headers in rows 3 through 5 (leading dots indicate sub parts) | ||||||||
| Cumulative Estimates of Population Change for Counties of Pennsylvania and County Rankings: April 1, 2000 to July 1, 2005 | ||||||||
| .Geographic Area | Population estimates | Change, 2000 to 2005 | State ranking of counties | |||||
| Population estimates | Change, 2000 to 2005 | |||||||
| July 1, 2005 | April 1, 2000 estimates base | Number | Percent | July 1, 2005 | April 1, 2000 estimates base | Number | Percent | |
| Pennsylvania | 12,429,616 | 12,281,054 | 148,562 | 1.2 | (X) | (X) | (X) | (X) |
| .Adams County | 99,749 | 91,292 | 8,457 | 9.3 | 31 | 33 | 12 | 5 |
| .Allegheny County | 1,235,841 | 1,281,666 | -45,825 | -3.6 | 2 | 2 | 66 | 63 |
| .Armstrong County | 70,586 | 72,392 | -1,806 | -2.5 | 38 | 38 | 54 | 57 |
| .Beaver County | 177,377 | 181,412 | -4,035 | -2.2 | 20 | 19 | 63 | 56 |
| .Bedford County | 50,091 | 49,984 | 107 | 0.2 | 45 | 43 | 31 | 32 |
| .Berks County | 396,314 | 373,638 | 22,676 | 6.1 | 9 | 9 | 6 | 9 |
| .Blair County | 126,795 | 129,144 | -2,349 | -1.8 | 27 | 27 | 58 | 50 |
| .Bradford County | 62,537 | 62,761 | -224 | -0.4 | 40 | 40 | 37 | 35 |
| .Bucks County | 621,342 | 597,632 | 23,710 | 4.0 | 4 | 4 | 5 | 17 |
| .Butler County | 182,087 | 174,083 | 8,004 | 4.6 | 19 | 20 | 14 | 13 |
| .Cambria County | 148,073 | 152,598 | -4,525 | -3.0 | 22 | 21 | 64 | 61 |
| .Cameron County | 5,639 | 5,974 | -335 | -5.6 | 67 | 66 | 40 | 67 |
| .Carbon County | 61,959 | 58,802 | 3,157 | 5.4 | 41 | 41 | 19 | 11 |
| .Centre County | 140,561 | 135,758 | 4,803 | 3.5 | 25 | 25 | 16 | 20 |
| .Chester County | 474,027 | 433,501 | 40,526 | 9.3 | 7 | 7 | 1 | 4 |
| .Clarion County | 40,589 | 41,765 | -1,176 | -2.8 | 55 | 53 | 49 | 59 |
| .Clearfield County | 82,783 | 83,382 | -599 | -0.7 | 36 | 36 | 43 | 40 |
| .Clinton County | 37,439 | 37,914 | -475 | -1.3 | 58 | 57 | 42 | 44 |
| .Columbia County | 64,939 | 64,148 | 791 | 1.2 | 39 | 39 | 25 | 26 |
| .Crawford County | 89,442 | 90,366 | -924 | -1.0 | 34 | 34 | 47 | 42 |
| .Cumberland County | 223,089 | 213,674 | 9,415 | 4.4 | 16 | 16 | 11 | 14 |
| .Dauphin County | 253,995 | 251,798 | 2,197 | 0.9 | 15 | 15 | 21 | 27 |
| .Delaware County | 555,648 | 551,974 | 3,674 | 0.7 | 5 | 5 | 17 | 30 |
| .Elk County | 33,577 | 35,112 | -1,535 | -4.4 | 59 | 59 | 50 | 66 |
| .Erie County | 280,446 | 280,843 | -397 | -0.1 | 14 | 13 | 41 | 33 |
| .Fayette County | 146,142 | 148,644 | -2,502 | -1.7 | 24 | 23 | 60 | 48 |
| .Forest County | 5,739 | 4,946 | 793 | 16.0 | 66 | 67 | 24 | 3 |
| .Franklin County | 137,409 | 129,313 | 8,096 | 6.3 | 26 | 26 | 13 | 8 |
| .Fulton County | 14,673 | 14,261 | 412 | 2.9 | 64 | 64 | 28 | 22 |
| .Greene County | 39,808 | 40,672 | -864 | -2.1 | 56 | 56 | 45 | 55 |
| .Huntingdon County | 45,947 | 45,586 | 361 | 0.8 | 47 | 49 | 29 | 28 |
| .Indiana County | 88,703 | 89,605 | -902 | -1.0 | 35 | 35 | 46 | 41 |
| .Jefferson County | 45,759 | 45,932 | -173 | -0.4 | 48 | 48 | 35 | 36 |
| .Juniata County | 23,507 | 22,821 | 686 | 3.0 | 61 | 61 | 26 | 21 |
| .Lackawanna County | 209,525 | 213,295 | -3,770 | -1.8 | 17 | 17 | 62 | 49 |
| .Lancaster County | 490,562 | 470,658 | 19,904 | 4.2 | 6 | 6 | 8 | 16 |
| .Lawrence County | 92,809 | 94,643 | -1,834 | -1.9 | 32 | 31 | 56 | 52 |
| .Lebanon County | 125,578 | 120,327 | 5,251 | 4.4 | 28 | 28 | 15 | 15 |
| .Lehigh County | 330,433 | 312,090 | 18,343 | 5.9 | 11 | 12 | 9 | 10 |
| .Luzerne County | 312,861 | 319,250 | -6,389 | -2.0 | 12 | 11 | 65 | 53 |
| .Lycoming County | 118,395 | 120,044 | -1,649 | -1.4 | 30 | 30 | 53 | 46 |
| .McKean County | 44,370 | 45,936 | -1,566 | -3.4 | 50 | 47 | 51 | 62 |
| .Mercer County | 119,598 | 120,293 | -695 | -0.6 | 29 | 29 | 44 | 38 |
| .Mifflin County | 46,235 | 46,486 | -251 | -0.5 | 46 | 45 | 39 | 37 |
| .Monroe County | 163,234 | 138,687 | 24,547 | 17.7 | 21 | 24 | 4 | 2 |
| .Montgomery County | 775,883 | 748,987 | 26,896 | 3.6 | 3 | 3 | 3 | 19 |
| .Montour County | 18,032 | 18,239 | -207 | -1.1 | 62 | 62 | 36 | 43 |
| .Northampton County | 287,767 | 267,069 | 20,698 | 7.8 | 13 | 14 | 7 | 6 |
| .Northumberland County | 92,610 | 94,556 | -1,946 | -2.1 | 33 | 32 | 57 | 54 |
| .Perry County | 44,728 | 43,602 | 1,126 | 2.6 | 49 | 51 | 23 | 23 |
| .Philadelphia County | 1,463,281 | 1,517,550 | -54,269 | -3.6 | 1 | 1 | 67 | 64 |
| .Pike County | 56,337 | 46,302 | 10,035 | 21.7 | 42 | 46 | 10 | 1 |
| .Potter County | 17,834 | 18,080 | -246 | -1.4 | 63 | 63 | 38 | 45 |
| .Schuylkill County | 147,447 | 150,336 | -2,889 | -1.9 | 23 | 22 | 61 | 51 |
| .Snyder County | 38,207 | 37,546 | 661 | 1.8 | 57 | 58 | 27 | 24 |
| .Somerset County | 78,907 | 80,023 | -1,116 | -1.4 | 37 | 37 | 48 | 47 |
| .Sullivan County | 6,391 | 6,556 | -165 | -2.5 | 65 | 65 | 34 | 58 |
| .Susquehanna County | 42,124 | 42,238 | -114 | -0.3 | 52 | 52 | 33 | 34 |
| .Tioga County | 41,649 | 41,373 | 276 | 0.7 | 54 | 55 | 30 | 29 |
| .Union County | 43,131 | 41,624 | 1,507 | 3.6 | 51 | 54 | 22 | 18 |
| .Venango County | 55,928 | 57,565 | -1,637 | -2.8 | 43 | 42 | 52 | 60 |
| .Warren County | 42,033 | 43,863 | -1,830 | -4.2 | 53 | 50 | 55 | 65 |
| .Washington County | 206,406 | 202,897 | 3,509 | 1.7 | 18 | 18 | 18 | 25 |
| .Wayne County | 50,113 | 47,722 | 2,391 | 5.0 | 44 | 44 | 20 | 12 |
| .Westmoreland County | 367,635 | 369,993 | -2,358 | -0.6 | 10 | 10 | 59 | 39 |
| .Wyoming County | 28,160 | 28,080 | 80 | 0.3 | 60 | 60 | 32 | 31 |
| .York County | 408,801 | 381,751 | 27,050 | 7.1 | 8 | 8 | 2 | 7 |
| Note: The April 1, 2000 Population Estimates base reflects changes to the Census 2000 population from the Count Question Resolution program and geographic program revisions. Dash (-) represents zero or rounds to zero. (X) Not applicable | ||||||||
| Courtesy of the Pennsylvania State Data Center | ||||||||
| Source: Population Division, U.S. Census Bureau | ||||||||
| Release Date: March 16, 2006 | ||||||||