Numeric Numeric Percent Percent
        Population Population Population Population
  1990 7/1/1998 7/1/1999 Change Change Change Change
  Census Estimate Estimate 1990-99 1998-99 1990-99 1998-99
Pennsylvania 11,881,643 12,002,329 11,994,016 112,373 -8,313 0.9% -0.1%
Adams 78,274 86,660 87,697 9,423 1,037 12.0% 1.2%
Allegheny 1,336,449 1,267,963 1,256,806 -79,643 -11,157 -6.0% -0.9%
Armstrong 73,478 73,313 73,001 -477 -312 -0.6% -0.4%
Beaver 186,093 184,287 182,687 -3,406 -1,600 -1.8% -0.9%
Bedford 47,919 49,405 49,699 1,780 294 3.7% 0.6%
Berks 336,523 355,761 358,211 21,688 2,450 6.4% 0.7%
Blair 130,542 130,547 129,937 -605 -610 -0.5% -0.5%
Bradford 60,967 62,386 62,146 1,179 -240 1.9% -0.4%
Bucks 541,174 587,863 594,047 52,873 6,184 9.8% 1.1%
Butler 152,013 170,799 172,522 20,509 1,723 13.5% 1.0%
Cambria 163,029 155,587 153,766 -9,263 -1,821 -5.7% -1.2%
Cameron 5,913 5,612 5,571 -342 -41 -5.8% -0.7%
Carbon 56,846 58,690 58,759 1,913 69 3.4% 0.1%
Centre 123,786 131,997 132,190 8,404 193 6.8% 0.1%
Chester 376,396 421,873 430,001 53,605 8,128 14.2% 1.9%
Clarion 41,699 41,723 41,651 -48 -72 -0.1% -0.2%
Clearfield 78,097 80,722 80,732 2,635 10 3.4% 0.0%
Clinton 37,182 36,937 36,774 -408 -163 -1.1% -0.4%
Columbia 63,202 63,906 63,674 472 -232 0.7% -0.4%
Crawford 86,169 89,266 89,109 2,940 -157 3.4% -0.2%
Cumberland 195,257 209,611 210,663 15,406 1,052 7.9% 0.5%
Dauphin 237,813 245,456 245,576 7,763 120 3.3% 0.0%
Delaware 547,651 542,592 541,502 -6,149 -1,090 -1.1% -0.2%
Elk 34,878 34,614 34,344 -534 -270 -1.5% -0.8%
Erie 275,572 278,114 276,993 1,421 -1,121 0.5% -0.4%
Fayette 145,351 144,362 143,775 -1,576 -587 -1.1% -0.4%
Forest 4,802 4,947 4,938 136 -9 2.8% -0.2%
Franklin 121,082 128,255 128,812 7,730 557 6.4% 0.4%
Fulton 13,837 14,528 14,616 779 88 5.6% 0.6%
Greene 39,550 42,228 42,072 2,522 -156 6.4% -0.4%
Huntingdon 44,164 44,755 44,753 589 -2 1.3% 0.0%
Indiana 89,994 88,389 87,831 -2,163 -558 -2.4% -0.6%
Jefferson 46,083 46,184 46,086 3 -98 0.0% -0.2%
Juniata 20,625 22,119 22,204 1,579 85 7.7% 0.4%
Lackawanna 219,039 208,390 206,520 -12,519 -1,870 -5.7% -0.9%
Lancaster 422,822 456,679 460,035 37,213 3,356 8.8% 0.7%
Lawrence 96,246 94,904 94,508 -1,738 -396 -1.8% -0.4%
Lebanon 113,744 117,631 117,856 4,112 225 3.6% 0.2%
Lehigh 291,130 298,792 299,855 8,725 1,063 3.0% 0.4%
Luzerne 328,149 314,609 312,000 -16,149 -2,609 -4.9% -0.8%
Lycoming 118,710 117,408 116,709 -2,001 -699 -1.7% -0.6%
McKean 47,131 46,319 45,987 -1,144 -332 -2.4% -0.7%
Mercer 121,003 121,760 121,458 455 -302 0.4% -0.2%
Mifflin 46,197 46,965 46,793 596 -172 1.3% -0.4%
Monroe 95,709 125,407 128,541 32,832 3,134 34.3% 2.5%
Montgomery 678,111 719,569 724,087 45,976 4,518 6.8% 0.6%
Montour 17,735 17,585 17,571 -164 -14 -0.9% -0.1%
Northampton 247,105 258,568 259,736 12,631 1,168 5.1% 0.5%
Northumberland 96,771 93,950 93,163 -3,608 -787 -3.7% -0.8%
Perry 41,172 44,273 44,280 3,108 7 7.5% 0.0%
Philadelphia 1,585,577 1,434,968 1,417,601 -167,976 -17,367 -10.6% -1.2%
Pike 27,966 40,149 41,357 13,391 1,208 47.9% 3.0%
Potter 16,717 17,134 17,115 398 -19 2.4% -0.1%
Schuylkill 152,585 150,066 148,788 -3,797 -1,278 -2.5% -0.9%
Snyder 36,680 37,965 37,875 1,195 -90 3.3% -0.2%
Somerset 78,218 80,192 80,028 1,810 -164 2.3% -0.2%
Sullivan 6,104 6,074 6,038 -66 -36 -1.1% -0.6%
Susquehanna 40,380 42,082 42,190 1,810 108 4.5% 0.3%
Tioga 41,126 41,522 41,657 531 135 1.3% 0.3%
Union 36,176 40,270 40,546 4,370 276 12.1% 0.7%
Venango 59,381 57,795 57,562 -1,819 -233 -3.1% -0.4%
Warren 45,050 43,793 43,505 -1,545 -288 -3.4% -0.7%
Washington 204,584 205,339 204,888 304 -451 0.1% -0.2%
Wayne 39,944 45,431 46,080 6,136 649 15.4% 1.4%
Westmoreland 370,321 372,389 370,658 337 -1,731 0.1% -0.5%
Wyoming 28,076 29,212 29,298 1,222 86 4.4% 0.3%
York 339,574 373,688 376,586 37,012 2,898 10.9% 0.8%