(CO-2000-4) County Population Estimates for April 1, 2000 and Demographic Components of Population Change: April 1, 1990 Census to April 1, 2000 Estimate The 4/1/1990 Census figure shown in this table is the population estimates base. It is an update of the 4/1/1990 Census figure shown in previous Census Bureau reports and reflects the governmental unit boundaries legally effective as of January 1, 2000, including any post-1990 corrections and other changes due to annexations, new incorporations, or mergers. The 4/1/2000 Estimates were created without knowledge of the Census 2000 results. The 4/1/2000 Census figure is included in this table for comparative purposes. Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC 20233 Contact: Statistical Information Staff, Population Division, U.S. Census Bureau (301-763-2422 or pop@census.gov) Internet Release Date: November 1, 2005 ------4/1/1990 Census to 4/1/2000 Estimate------ Net Net 4/1/2000 4/1/2000 4/1/1990 International Domestic FIPS State/County Code and Area Name Census Estimate Census Births Deaths Migration Migration 42 Pennsylvania...................... 12,281,054 11,983,923 11,882,842 1,547,257 1,261,776 131,147 -283,906 42001 Adams County, PA.................. 91,292 88,259 78,274 10,095 7,622 587 7,143 42003 Allegheny County, PA.............. 1,281,666 1,248,378 1,336,449 159,395 153,422 10,531 -98,608 42005 Armstrong County, PA.............. 72,392 72,754 73,478 8,403 8,595 23 -260 42007 Beaver County, PA................. 181,412 181,341 186,093 21,509 20,305 -79 -4,903 42009 Bedford County, PA................ 49,984 49,849 47,919 5,572 4,613 65 1,091 42011 Berks County, PA.................. 373,638 359,805 336,523 46,070 35,522 3,971 8,836 42013 Blair County, PA.................. 129,144 129,378 130,542 15,252 15,506 127 -539 42015 Bradford County, PA............... 62,761 62,128 60,967 7,651 6,237 145 -186 42017 Bucks County, PA.................. 597,635 597,383 541,174 74,292 44,689 8,201 17,634 42019 Butler County, PA................. 174,083 173,495 152,013 21,080 15,247 363 15,805 42021 Cambria County, PA................ 152,598 152,455 163,062 16,890 19,038 233 -7,939 42023 Cameron County, PA................ 5,974 5,484 5,913 715 656 -6 -443 42025 Carbon County, PA................. 58,802 58,670 56,803 5,983 7,164 48 3,220 42027 Centre County, PA................. 135,758 132,610 124,812 13,373 7,713 1,633 830 42029 Chester County, PA................ 433,501 435,721 376,389 55,134 28,914 7,537 26,473 42031 Clarion County, PA................ 41,765 41,609 41,699 4,730 4,156 1 -514 42033 Clearfield County, PA............. 83,382 80,953 78,097 9,402 8,655 170 2,259 42035 Clinton County, PA................ 37,914 37,089 37,182 4,411 4,097 126 -370 42037 Columbia County, PA............... 64,151 63,399 63,202 6,589 6,598 269 180 42039 Crawford County, PA............... 90,366 89,321 86,166 11,153 9,058 168 1,234 42041 Cumberland County, PA............. 213,674 210,062 195,257 23,143 18,018 1,676 8,663 42043 Dauphin County, PA................ 251,798 245,998 237,813 34,442 24,155 3,797 -5,230 42045 Delaware County, PA............... 550,864 540,676 547,658 73,714 56,833 8,625 -32,204 42047 Elk County, PA.................... 35,112 34,082 34,878 4,256 3,761 65 -1,217 42049 Erie County, PA................... 280,843 275,820 275,575 38,344 26,686 2,801 -13,302 42051 Fayette County, PA................ 148,644 142,961 145,351 17,479 18,239 207 -1,067 42053 Forest County, PA................. 4,946 4,753 4,802 428 765 3 311 42055 Franklin County, PA............... 129,313 129,040 121,082 15,512 11,761 437 4,178 42057 Fulton County, PA................. 14,261 14,521 13,837 1,632 1,173 -6 284 42059 Greene County, PA................. 40,672 41,880 39,550 4,545 4,483 -9 2,403 42061 Huntingdon County, PA............. 45,586 44,792 44,164 4,950 4,051 65 -139 42063 Indiana County, PA................ 89,605 87,383 89,994 9,377 8,454 134 -3,364 42065 Jefferson County, PA.............. 45,932 46,055 46,083 5,340 5,299 77 30 42067 Juniata County, PA................ 22,821 22,412 20,625 2,867 2,196 109 1,083 42069 Lackawanna County, PA............. 213,295 205,291 219,097 23,804 28,028 1,022 -9,635 42071 Lancaster County, PA.............. 470,658 461,650 422,822 67,562 38,500 4,606 6,983 42073 Lawrence County, PA............... 94,643 94,151 96,246 11,052 11,227 38 -1,512 42075 Lebanon County, PA................ 120,327 117,864 113,744 14,751 11,603 773 580 42077 Lehigh County, PA................. 312,090 300,553 291,130 38,387 29,661 4,910 -3,164 42079 Luzerne County, PA................ 319,250 309,342 328,149 33,871 43,688 1,302 -8,691 42081 Lycoming County, PA............... 120,044 116,131 118,710 14,679 12,110 317 -5,106 42083 McKean County, PA................. 45,936 45,617 47,131 5,507 5,664 27 -1,212 42085 Mercer County, PA................. 120,293 120,999 121,003 14,023 13,663 72 97 42087 Mifflin County, PA................ 46,486 46,940 46,197 6,166 4,983 129 -403 42089 Monroe County, PA................. 138,687 131,579 95,681 14,502 9,405 932 29,870 42091 Montgomery County, PA............. 750,097 727,345 678,193 93,479 65,472 9,711 11,404 42093 Montour County, PA................ 18,236 17,682 17,735 2,307 2,227 177 -245 42095 Northampton County, PA............ 267,066 260,506 247,110 29,937 23,561 2,310 5,770 42097 Northumberland County, PA......... 94,556 91,849 96,771 10,073 12,468 153 -2,242 42099 Perry County, PA.................. 43,602 44,520 41,172 5,603 3,575 91 1,370 42101 Philadelphia County, PA........... 1,517,550 1,409,186 1,585,577 249,334 187,083 49,148 -284,839 42103 Pike County, PA................... 46,302 42,237 28,032 3,810 2,728 142 12,962 42105 Potter County, PA................. 18,080 17,343 16,717 2,209 1,926 24 393 42107 Schuylkill County, PA............. 150,336 147,304 152,585 15,693 20,713 235 291 42109 Snyder County, PA................. 37,546 37,862 36,680 4,582 3,154 93 -208 42111 Somerset County, PA............... 80,023 79,122 78,218 8,720 8,647 103 1,025 42113 Sullivan County, PA............... 6,556 6,090 6,104 562 997 2 453 42115 Susquehanna County, PA............ 42,238 42,280 40,380 4,821 4,305 63 1,480 42117 Tioga County, PA.................. 41,373 41,694 41,126 4,450 4,117 43 340 42119 Union County, PA.................. 41,624 40,682 36,176 3,888 3,339 138 3,951 42121 Venango County, PA................ 57,565 57,102 59,381 6,720 6,494 87 -2,375 42123 Warren County, PA................. 43,863 43,290 45,050 5,272 4,914 50 -1,996 42125 Washington County, PA............. 202,897 204,729 204,584 23,001 23,862 83 1,894 42127 Wayne County, PA.................. 47,722 46,272 39,944 5,277 5,075 62 6,279 42129 Westmoreland County, PA........... 369,993 368,007 370,321 40,425 42,016 339 674 42131 Wyoming County, PA................ 28,080 28,877 28,076 3,603 2,530 41 -237 42133 York County, PA................... 381,751 379,311 339,574 45,458 30,360 1,832 20,773