| 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 |
| Lackawanna County | 213 295 | 219 039 | - 5 744 | - 2.6 |
| Abington township | 1 616 | 1 533 | 83 | 5.4 |
| Archbald borough | 6 220 | 6 291 | - 71 | - 1.1 |
| Benton township | 1 881 | 1 837 | 44 | 2.4 |
| Blakely borough | 7 027 | 7 222 | - 195 | - 2.7 |
| Carbondale city | 9 804 | 10 664 | - 860 | - 8.1 |
| Carbondale township | 1 008 | 907 | 101 | 11.1 |
| Clarks Green borough | 1 630 | 1 603 | 27 | 1.7 |
| Clarks Summit borough | 5 126 | 5 433 | - 307 | - 5.7 |
| Clifton township | 1 139 | 1 041 | 98 | 9.4 |
| Covington township | 1 994 | 2 055 | - 61 | - 3.0 |
| Dalton borough | 1 294 | 1 369 | - 75 | - 5.5 |
| Dickson City borough | 6 205 | 6 276 | - 71 | - 1.1 |
| Dunmore borough | 14 018 | 15 403 | - 1 385 | - 9.0 |
| Elmhurst township | 838 | 834 | 4 | 0.5 |
| Fell township | 2 331 | 2 426 | - 95 | - 3.9 |
| Glenburn township | 1 212 | 1 242 | - 30 | - 2.4 |
| Greenfield township | 1 990 | 1 743 | 247 | 14.2 |
| Jefferson township | 3 592 | 3 438 | 154 | 4.5 |
| Jermyn borough | 2 287 | 2 263 | 24 | 1.1 |
| Jessup borough | 4 718 | 4 605 | 113 | 2.5 |
| La Plume township | 603 | 647 | - 44 | - 6.8 |
| Madison township | 2 542 | 2 207 | 335 | 15.2 |
| Mayfield borough | 1 756 | 1 890 | - 134 | - 7.1 |
| Moosic borough | 5 575 | 5 339 | 236 | 4.4 |
| Moscow borough | 1 883 | 1 527 | 356 | 23.3 |
| Newton township | 2 699 | 2 843 | - 144 | - 5.1 |
| North Abington township | 782 | 691 | 91 | 13.2 |
| Old Forge borough | 8 798 | 8 834 | - 36 | - 0.4 |
| Olyphant borough | 4 978 | 5 222 | - 244 | - 4.7 |
| Ransom township | 1 429 | 1 608 | - 179 | - 11.1 |
| Roaring Brook township | 1 637 | 1 966 | - 329 | - 16.7 |
| Scott township | 4 931 | 5 350 | - 419 | - 7.8 |
| Scranton city | 76 415 | 81 805 | - 5 390 | - 6.6 |
| South Abington township | 8 638 | 6 377 | 2 261 | 35.5 |
| Spring Brook township | 2 367 | 2 097 | 270 | 12.9 |
| Taylor borough | 6 475 | 6 941 | - 466 | - 6.7 |
| Thornhurst township | 798 | 486 | 312 | 64.2 |
| Throop borough | 4 010 | 4 070 | - 60 | - 1.5 |
| Vandling borough | 738 | 660 | 78 | 11.8 |
| West Abington township | 311 | 294 | 17 | 5.8 |
| Source: U.S. Census Bureau | Prepared by: Pennsylvania State Data Center | |||