| 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 |
| Crawford County | 90 366 | 86 169 | 4 197 | 4.9 |
| Athens township | 775 | 699 | 76 | 10.9 |
| Beaver township | 903 | 831 | 72 | 8.7 |
| Bloomfield township | 2 051 | 1 839 | 212 | 11.5 |
| Blooming Valley borough | 378 | 391 | - 13 | - 3.3 |
| Cambridge township | 1 486 | 1 496 | - 10 | - 0.7 |
| Cambridge Springs borough | 2 363 | 1 837 | 526 | 28.6 |
| Centerville borough | 247 | 249 | - 2 | - 0.8 |
| Cochranton borough | 1 148 | 1 174 | - 26 | - 2.2 |
| Conneaut township | 1 550 | 1 399 | 151 | 10.8 |
| Conneaut Lake borough | 708 | 699 | 9 | 1.3 |
| Conneautville borough | 848 | 822 | 26 | 3.2 |
| Cussewago township | 1 597 | 1 409 | 188 | 13.3 |
| East Fairfield township | 848 | 890 | - 42 | - 4.7 |
| East Fallowfield township | 1 434 | 1 280 | 154 | 12.0 |
| East Mead township | 1 485 | 1 441 | 44 | 3.1 |
| Fairfield township | 1 104 | 997 | 107 | 10.7 |
| Greenwood township | 1 487 | 1 361 | 126 | 9.3 |
| Hayfield township | 3 092 | 2 937 | 155 | 5.3 |
| Hydetown borough | 605 | 681 | - 76 | - 11.2 |
| Linesville borough | 1 155 | 1 166 | - 11 | - 0.9 |
| Meadville city | 13 685 | 14 318 | - 633 | - 4.4 |
| North Shenango township | 1 387 | 902 | 485 | 53.8 |
| Oil Creek township | 1 880 | 2 069 | - 189 | - 9.1 |
| Pine township | 531 | 455 | 76 | 16.7 |
| Randolph township | 1 838 | 1 661 | 177 | 10.7 |
| Richmond township | 1 379 | 1 370 | 9 | 0.7 |
| Rockdale township | 1 343 | 1 045 | 298 | 28.5 |
| Rome township | 1 745 | 1 491 | 254 | 17.0 |
| Sadsbury township | 2 941 | 2 575 | 366 | 14.2 |
| Saegertown borough | 1 071 | 1 066 | 5 | 0.5 |
| South Shenango township | 2 047 | 1 560 | 487 | 31.2 |
| Sparta township | 1 740 | 1 554 | 186 | 12.0 |
| Spartansburg borough | 333 | 403 | - 70 | - 17.4 |
| Spring township | 1 571 | 1 561 | 10 | 0.6 |
| Springboro borough | 491 | 471 | 20 | 4.2 |
| Steuben township | 908 | 820 | 88 | 10.7 |
| Summerhill township | 1 350 | 1 264 | 86 | 6.8 |
| Summit township | 2 172 | 1 890 | 282 | 14.9 |
| Titusville city | 6 146 | 6 434 | - 288 | - 4.5 |
| Townville borough | 306 | 358 | - 52 | - 14.5 |
| Troy township | 1 339 | 1 235 | 104 | 8.4 |
| Union township | 1 049 | 895 | 154 | 17.2 |
| Venango borough | 288 | 289 | - 1 | - 0.3 |
| Venango township | 956 | 729 | 227 | 31.1 |
| Vernon township | 5 499 | 5 605 | - 106 | - 1.9 |
| Wayne township | 1 558 | 1 401 | 157 | 11.2 |
| West Fallowfield township | 659 | 693 | - 34 | - 4.9 |
| West Mead township | 5 227 | 5 401 | - 174 | - 3.2 |
| West Shenango township | 541 | 496 | 45 | 9.1 |
| Woodcock borough | 146 | 148 | - 2 | - 1.4 |
| Woodcock township | 2 976 | 2 412 | 564 | 23.4 |
| Source: U.S. Census Bureau | Prepared by: Pennsylvania State Data Center | |||