| Population Change 1990-2000 | ||||
| County or Municipality | 2000 Population | 1990 Population | Population Change | Percent Change |
| Pennsylvania | 12 281 054 | 11 881 643 | 399 411 | 3.4 |
| Schuylkill County | 150 336 | 152 585 | - 2 249 | - 1.5 |
| Ashland borough | 3 283 | 3 856 | - 573 | - 14.9 |
| Auburn borough | 839 | 913 | - 74 | - 8.1 |
| Barry township | 967 | 845 | 122 | 14.4 |
| Blythe township | 905 | 1 023 | - 118 | - 11.5 |
| Branch township | 1 871 | 2 051 | - 180 | - 8.8 |
| Butler township | 3 588 | 4 099 | - 511 | - 12.5 |
| Cass township | 2 383 | 2 088 | 295 | 14.1 |
| Coaldale borough | 2 295 | 2 531 | - 236 | - 9.3 |
| Cressona borough | 1 635 | 1 694 | - 59 | - 3.5 |
| Deer Lake borough | 528 | 550 | - 22 | - 4.0 |
| Delano township | 487 | 573 | - 86 | - 15.0 |
| East Brunswick township | 1 601 | 1 506 | 95 | 6.3 |
| East Norwegian township | 864 | 991 | - 127 | - 12.8 |
| East Union township | 1 419 | 1 374 | 45 | 3.3 |
| Eldred township | 719 | 736 | - 17 | - 2.3 |
| Foster township | 1 124 | 298 | 826 | 277.2 |
| Frackville borough | 4 361 | 4 700 | - 339 | - 7.2 |
| Frailey township | 416 | 518 | - 102 | - 19.7 |
| Gilberton borough | 867 | 953 | - 86 | - 9.0 |
| Girardville borough | 1 742 | 1 889 | - 147 | - 7.8 |
| Gordon borough | 781 | 768 | 13 | 1.7 |
| Hegins township | 3 519 | 3 561 | - 42 | - 1.2 |
| Hubley township | 889 | 928 | - 39 | - 4.2 |
| Kline township | 1 591 | 1 722 | - 131 | - 7.6 |
| Landingville borough | 175 | 192 | - 17 | - 8.9 |
| McAdoo borough | 2 274 | 2 459 | - 185 | - 7.5 |
| Mahanoy township | 1 112 | 1 273 | - 161 | - 12.6 |
| Mahanoy City borough | 4 647 | 5 209 | - 562 | - 10.8 |
| Mechanicsville borough | 515 | 540 | - 25 | - 4.6 |
| Middleport borough | 458 | 520 | - 62 | - 11.9 |
| Minersville borough | 4 552 | 4 877 | - 325 | - 6.7 |
| Mount Carbon borough | 87 | 132 | - 45 | - 34.1 |
| New Castle township | 395 | 567 | - 172 | - 30.3 |
| New Philadelphia borough | 1 149 | 1 283 | - 134 | - 10.4 |
| New Ringgold borough | 291 | 315 | - 24 | - 7.6 |
| North Manheim township | 3 287 | 3 404 | - 117 | - 3.4 |
| North Union township | 1 225 | 1 143 | 82 | 7.2 |
| Norwegian township | 2 172 | 1 938 | 234 | 12.1 |
| Orwigsburg borough | 3 106 | 2 780 | 326 | 11.7 |
| Palo Alto borough | 1 052 | 1 192 | - 140 | - 11.7 |
| Pine Grove borough | 2 154 | 2 118 | 36 | 1.7 |
| Pine Grove township | 3 930 | 3 699 | 231 | 6.2 |
| Port Carbon borough | 2 019 | 2 134 | - 115 | - 5.4 |
| Port Clinton borough | 288 | 328 | - 40 | - 12.2 |
| Porter township | 2 032 | 2 560 | - 528 | - 20.6 |
| Pottsville city | 15 549 | 16 603 | - 1 054 | - 6.3 |
| Reilly township | 802 | 835 | - 33 | - 4.0 |
| Ringtown borough | 826 | 853 | - 27 | - 3.2 |
| Rush township | 3 957 | 3 472 | 485 | 14.0 |
| Ryan township | 1 451 | 1 363 | 88 | 6.5 |
| St. Clair borough | 3 254 | 3 524 | - 270 | - 7.7 |
| Schuylkill township | 1 123 | 1 230 | - 107 | - 8.7 |
| Schuylkill Haven borough | 5 548 | 5 610 | - 62 | - 1.1 |
| Shenandoah borough | 5 624 | 6 221 | - 597 | - 9.6 |
| South Manheim township | 2 191 | 1 558 | 633 | 40.6 |
| Tamaqua borough | 7 174 | 7 943 | - 769 | - 9.7 |
| Tower City borough | 1 396 | 1 518 | - 122 | - 8.0 |
| Tremont borough | 1 784 | 1 814 | - 30 | - 1.7 |
| Tremont township | 250 | 297 | - 47 | - 15.8 |
| Union township | 1 308 | 1 458 | - 150 | - 10.3 |
| Upper Mahantongo township | 652 | 696 | - 44 | - 6.3 |
| Walker township | 936 | 949 | - 13 | - 1.4 |
| Washington township | 2 750 | 2 423 | 327 | 13.5 |
| Wayne township | 4 721 | 3 929 | 792 | 20.2 |
| West Brunswick township | 3 428 | 3 227 | 201 | 6.2 |
| West Mahanoy township | 6 166 | 4 539 | 1 627 | 35.8 |
| West Penn township | 3 852 | 3 693 | 159 | 4.3 |
| Source: U.S. Census Bureau | Prepared by: Pennsylvania State Data Center | |||